diff --git a/LICENSE b/LICENSE
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--- /dev/null
+++ b/LICENSE
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+              GNU GENERAL PUBLIC LICENSE
+                Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
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+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+              END OF TERMS AND CONDITIONS
+
+     How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
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+if any, to sign a "copyright disclaimer" for the program, if necessary.
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+<http://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<http://www.gnu.org/philosophy/why-not-lgpl.html>.
+
diff --git a/Linguistics/Bigram.hs b/Linguistics/Bigram.hs
new file mode 100644
--- /dev/null
+++ b/Linguistics/Bigram.hs
@@ -0,0 +1,131 @@
+
+-- | Map between 'String's that represent characters and their 'Int'-based
+-- representation.
+--
+-- NOTE filtering the scores list and creating a single bigram map takes about
+-- 70 seconds.
+--
+-- NOTE A single bigram map costs around 160 MByte ram. This includes the
+-- overhead for actually storing the bigrams once (creating pointers instead of
+-- multiple copied 'Bigram' data structures.
+
+module Linguistics.Bigram where
+
+import           Control.Applicative
+import           Control.Arrow
+import           Control.DeepSeq
+import           Control.Lens
+import           Data.Attoparsec.ByteString.Lazy ((<?>))
+import           Data.ByteString (ByteString)
+import           Data.Function
+import           Data.Hashable
+import           Data.Interned
+import           Data.List
+import           Data.Strict.Tuple
+import           GHC.Generics (Generic)
+import qualified Data.Attoparsec.ByteString as AB
+import qualified Data.Attoparsec.ByteString.Char8 as AB hiding (takeWhile1)
+import qualified Data.Attoparsec.ByteString.Lazy as ABL
+import qualified Data.ByteString as B
+import qualified Data.ByteString.Lazy as BL hiding (unpack)
+import qualified Data.ByteString.Lazy.Char8 as BL hiding (readFile)
+import qualified Data.ByteString.Short as BS
+import qualified Data.HashMap.Strict as HM
+import qualified Data.Map.Strict as M
+import qualified Data.Set as S
+import qualified Data.Stringable as SA
+
+import           NLP.Text.BTI
+
+
+
+data Bigram = Bigram
+  { peekChar :: {-# UNPACK #-} !BTI
+  , hitChar  :: {-# UNPACK #-} !BTI
+  }
+  deriving (Show,Eq,Ord,Generic)
+
+instance Hashable Bigram where
+  hashWithSalt s (Bigram p h) = hashWithSalt s (p,h) -- (uninternMultiChar p, uninternMultiChar h)
+  hash           (Bigram p h) = hash (hash p , hash h)
+  {-# Inline hashWithSalt #-}
+  {-# Inline hash         #-}
+
+instance NFData Bigram where
+  rnf !(Bigram a b) = ()
+
+instance Hashable (Pair Int Int) where
+  hashWithSalt s (a:!:b) = hashWithSalt s (a,b)
+  {-# Inline hashWithSalt #-}
+
+-- | Try to read the first line to figure out if there is a default score there
+
+withDefault :: Double -> [BL.ByteString] -> (Double,[BL.ByteString])
+withDefault d [] = (d,[])
+withDefault d (x:xs)
+  | [(rd,"")] <- readsPrec 0 (BL.unpack x) = (rd,xs)
+  | otherwise = (d,(x:xs))
+
+parseLine l = case ABL.eitherResult (ABL.parse go l) of
+                Left  err -> error err
+                Right p   -> force p
+  where
+    go     = (,,,,) <$> lang <*> lang <*> bigram <*> bigram <*> score <?> "go"
+    lang   = wrd <?> "lang"
+    bigram = Bigram <$> wrd <*> wrd <?> "bigram"
+    score  = AB.double <?> "score"
+    wrd    = SA.fromByteString <$> AB.takeWhile1 (not . AB.isHorizontalSpace) <* AB.space
+
+type Lang = BTI
+type Line = (Lang, Lang, Bigram, Bigram, Double)
+type Scores = HM.HashMap (Bigram:!:Bigram) Double
+
+data Mapping = Mapping
+  { bigrams :: !(M.Map Bigram Bigram)
+  , lliid   :: !(M.Map (Lang:!:Lang) Scores)
+  }
+  deriving (Show)
+
+instance Hashable (Pair Bigram Bigram) where
+  hashWithSalt s (a:!:b) = hashWithSalt s (a,b)
+
+lines2mapping :: [Line] -> Mapping
+lines2mapping = foldl' mkMapping emptyMapping . concatMap dupGroup . groupBy ((==) `on` ((^._1) &&& (^._2))) where
+  dupGroup ls@(l:_)
+    | l^._1 == l^._2 = [ls]
+    | otherwise      = [ls,ls']
+    where ls' = map (\(l1,l2,b1,b2,d) -> (l2,l1,b2,b1,d)) . filter (\l -> l^._1 /= l^._2) $ ls
+
+emptyMapping = let b = Bigram "" ""
+               in Mapping (M.singleton b b) M.empty
+
+mkMapping :: Mapping -> [Line] -> Mapping
+mkMapping !m [] = m
+mkMapping !(Mapping bs ll) xs@(x:_)
+  | otherwise = Mapping bs' ll'
+  where
+    nom = filter (`M.notMember` bs) $ map (^._3) xs ++ map (^._4) xs
+    bs' = bs `M.union` (M.fromList $ map (\a -> (a,a)) nom)
+    ll' = M.insertWith HM.union (x^._1 :!: x^._2) ys ll
+    ys :: Scores
+    ys = HM.fromList
+           [ ((k1:!:k2),d)
+           | y <- xs
+           , let k1 = bs' M.! (y^._3)
+           , let k2 = bs' M.! (y^._4)
+           , let d = y ^._5
+           ]
+
+-- | Given a set of acceptable languages, a default score, and the lazy
+-- bytestring of scores, create the 'Mapping' of languages and scores.
+
+generateLookups :: S.Set BTI -> Double -> BL.ByteString -> Mapping
+generateLookups langs wd b = lines2mapping xs where
+  (d,ls) = withDefault wd $ BL.lines b
+  xs = filter inLangSet $ map parseLine ls
+  inLangSet l
+    | S.null langs = True
+    |  (l^._1) `S.member` langs
+    && (l^._2) `S.member` langs = True
+    | otherwise = False
+
diff --git a/Linguistics/Common.hs b/Linguistics/Common.hs
new file mode 100644
--- /dev/null
+++ b/Linguistics/Common.hs
@@ -0,0 +1,90 @@
+
+-- | Some common functions and things that are not of immediate importance to
+-- understand the algorithms.
+
+module Linguistics.Common where
+
+import           Control.Monad (forM_)
+import           Data.ByteString (ByteString)
+import           Data.Char
+import           Data.List (transpose,reverse)
+import qualified Data.ByteString.Short as S
+import qualified Data.Text as T
+import qualified Data.Text.Lazy as TL
+import qualified Data.Text.Lazy.IO as TL
+import qualified Data.Text.Lazy.Builder as TL
+import           Data.Text (Text)
+import qualified Data.Text.Format as TF
+import qualified Data.Text.Encoding as T
+import           Text.Printf
+import           Data.Stringable (toString)
+import           GHC.IO.Handle
+
+import           NLP.Text.BTI
+
+
+
+type IMCp = (BTI, BTI)
+
+-- | Actually align something prettily
+
+alignPretty :: [[IMCp]] -> [String]
+alignPretty xss = map concat . transpose . map (\xs -> map (f xs) xs) . transpose . map reverse $ xss where
+  f zs x = printAligned x zs
+
+-- | Prettyprint ``characters'', which are actually small bytestrings.
+
+printAligned = printAlignedPad ' '
+
+-- | Print with special padding character
+
+printAlignedPad :: Char -> IMCp -> [IMCp] -> String
+printAlignedPad p (_,c) zs = printf " %s%s" (replicate pad p) (toUtf8String c) where
+  pad :: Int
+  pad = (1+) . maximum $ 0 : map (\(_,x) -> printLength x - printLength c) zs
+
+-- | Length in /printed characters/ of an UTF8 string wrapped as a 'ByteString'
+--
+-- NOTE 'isMark' selects unicode symbols that modify a character, thereby not
+-- increasing the length of the /printed/ string.
+
+printLength :: BTI -> Int
+printLength = length . filter isAN . toUtf8String where
+  isAN c = not (isMark c) -- isAlphaNum c || c `elem` [ '\\', '\'', '^', '$', '-', '\'' ]
+
+
+{-
+  } where prnt x z = let pad = max 0 (length (filter isAN $ pp z) - length (filter isAN $ pp x))
+                     in  printf " %s%s" (replicate pad ' ') (pp x)
+          ds   x = ' ' : replicate (length $ filter isAN $ pp x) '-'
+          isAN c = isAlphaNum c || c `elem` [ '\\', '\'' ]
+-}
+
+
+toUtf8String :: BTI -> String
+toUtf8String = toString -- T.unpack . T.decodeUtf8 . conv
+{-# INLINE toUtf8String #-}
+
+buildLines :: [[Text]] -> TL.Builder
+buildLines xss = s where
+  n = (1+) . maximum $ 1 : (map (T.length . T.filter (not . isMark)) . concat $ xss)
+  yss = transpose xss
+  fmt = "%" ++ show n ++ "s"
+  s = mconcat [ (mconcat $ map (TF.left n ' ') ys) `mappend` "\n"
+              | ys <- yss ]
+
+printLines :: Handle -> [[Text]] -> IO ()
+printLines hndl xss = do
+  let n = (1+) . maximum $ 1 : (map (T.length . T.filter (not . isMark)) . concat $ xss)
+  let yss = transpose xss
+  let fmt = "%" ++ show n ++ "s"
+  let s = mconcat [ (mconcat $ map (TF.left n ' ') ys) `mappend` "\n"
+                  | ys <- yss ]
+  TL.hPutStrLn hndl $ TL.toLazyText s
+  --forM_ yss $ \ys -> do
+  --  forM_ ys $ \y -> hPrintf hndl fmt (T.unpack y)
+  --  hPrintf hndl "\n"
+
+--conv = S.fromShort . getMultiChar . uninternMultiChar
+--{-# INLINE conv #-}
+
diff --git a/Linguistics/TwoWay/Bigram.hs b/Linguistics/TwoWay/Bigram.hs
new file mode 100644
--- /dev/null
+++ b/Linguistics/TwoWay/Bigram.hs
@@ -0,0 +1,167 @@
+{-# LANGUAGE MultiWayIf #-}
+{-# LANGUAGE OverloadedStrings #-}
+{-# LANGUAGE TypeOperators #-}
+{-# LANGUAGE BangPatterns #-}
+{-# LANGUAGE NoMonomorphismRestriction #-}
+
+{-# OPTIONS_GHC -fno-liberate-case #-}
+
+module Linguistics.TwoWay.Bigram where
+
+import           Data.ByteString.Char8 (ByteString)
+import           Data.FMList (FMList)
+import           Data.Sequence (Seq)
+import           Data.Strict.Tuple (Pair (..))
+import           Data.Stringable (toString,toText)
+import           Data.Text (Text,pack)
+import           Data.Vector.Fusion.Util (Id(..))
+import           Data.Vector.Unboxed (Vector)
+import qualified Data.ByteString.Char8 as B
+import qualified Data.HashMap.Strict as HM
+import qualified Data.List as L
+import qualified Data.Vector.Fusion.Stream.Monadic as SM
+import qualified Data.Vector.Unboxed as VU
+import           Text.Printf
+import qualified Data.Text.Format as TF
+
+import           ADP.Fusion
+import           Data.PrimitiveArray
+import           DP.Alignment.Global.Tapes2
+import           NLP.Scoring.SimpleUnigram
+import           NLP.Text.BTI
+
+import           Linguistics.Common
+import           Linguistics.Bigram
+
+
+
+type IMC = BTI
+type SigT m x r = SigGlobal m x r IMCp IMCp
+
+
+
+sScore :: Monad m => Double -> Double -> Scores -> SigT m Double Double
+sScore dS gapopen s = SigGlobal
+  { delin = \ww (Z:.c     :._     ) -> ww + gapopen
+  , indel = \ww (Z:._     :.c     ) -> ww + gapopen
+  , align = \ww (Z:.(lp,l):.(up,u)) -> ww + lkup up u lp l
+  , done = const 0
+  , h         = SM.foldl' max (-888888)
+  } where
+    lkup mc' c nd' d = {-# SCC "lkup" #-} HM.lookupDefault dS (Bigram mc' c :!: Bigram nd' d) s
+    {-# INLINE lkup #-}
+{-# INLINE sScore #-}
+{-
+sScore dS gapOpen s = SigGlobal
+  { indel = \ww (Z:.():.(mc,c))     -> if | c=="$"    -> -500000
+                                          | otherwise -> ww + gapOpen
+  , delin = \ww (Z:.(mc,c):.())     -> if | c=="$"    -> -500000
+                                          | otherwise -> ww + gapOpen
+  , align = \ww (Z:.(mc,c):.(nd,d)) -> if | c=="^" && d=="$" -> -500000
+                                          | c=="$" && d=="^" -> -500000
+                                              | otherwise        -> case (mc,nd) of
+                                                  (Nothing  , Nothing ) -> 0
+                                                  (Just mc' , Just nd') -> ww + lkup mc' c nd' d
+                                                  _                     -> -500000
+  , done   = const 0
+  , h         = S.foldl' max (-500000)
+  } where
+    lkup mc' c nd' d = maybe dS id . unsafePerformIO $ H.lookup s (Bigram mc' c :!: Bigram nd' d)
+    {-# INLINE lkup #-}
+{-# INLINE sScore #-}
+-}
+
+sBacktrack :: Monad m => SigT m (FMList (IMCp,IMCp)) [FMList (IMCp,IMCp)]
+sBacktrack = backtrack ("-","-") ("-","-")
+{-# Inline sBacktrack #-}
+
+sBacktrackFun :: Monad m => Double -> Double -> Scores -> SigT m (FMList [Text]) [FMList [Text]]
+sBacktrackFun defS go sco = backtrackFun f g ("-","-") ("-","-") where
+  f cc@(mc',c) dd@(nd',d) = let z = HM.lookupDefault defS (Bigram mc' c :!: Bigram nd' d) sco
+    in [toText c,toText d, pack $ printf "%3.1f" z]
+  g    (_  ,c)    ( _  ,"-") = [toText c,"-", pack $ printf "%3.1f" go]
+  g    (_, "-") (_,d) = ["-", toText d, pack $ printf "%3.1f" go]
+{-# Inline sBacktrackFun #-}
+
+alignGlobal :: Double -> Double -> Scores -> Int -> Vector IMC -> Vector IMC -> (Double,[[[Text]]])
+alignGlobal ds gapopen scoring k i1' i2' = (d, take k bs) where -- . L.map runPrettyF . S.toList . unId $ axiom b) where
+  i1 = VU.zip i1' (VU.tail i1') ; i2 = VU.zip i2' (VU.tail i2')
+  n1 = VU.length i1 ; n2 = VU.length i2
+  !(Z:.t) = alignGlobalForward ds gapopen scoring i1 i2
+  d = unId $ axiom t
+  bs = alignGlobalBacktrack ds gapopen scoring i1 i2 t
+{-# NoInline alignGlobal #-}
+
+alignGlobalForward :: Double -> Double -> Scores -> Vector IMCp -> Vector IMCp -> Z:.ITbl Id Unboxed (Z:.PointL I:.PointL I) Double
+alignGlobalForward ds gapopen scoring i1 i2 = {-# SCC "ali_forw" #-} mutateTablesDefault $ 
+  gGlobal (sScore ds gapopen scoring)
+    (ITbl 0 0 (Z:.EmptyOk:.EmptyOk) (fromAssocs (Z:.PointL 0:.PointL 0) (Z:.PointL n1:.PointL n2) (-999999) []))
+    (chr i1) (chr i2)
+  where n1 = VU.length i1
+        n2 = VU.length i2
+{-# NoInline alignGlobalForward #-}
+
+alignGlobalBacktrack :: Double -> Double -> Scores -> Vector IMCp -> Vector IMCp -> ITbl Id Unboxed (Z:.PointL I:.PointL I) Double -> [[[Text]]]
+alignGlobalBacktrack ds gapopen scoring i1 i2 t = {-# SCC "ali_back" #-} L.map runBacktrack . unId $ axiom b
+  where (Z:.b) = gGlobal (sScore ds gapopen scoring <|| sBacktrackFun ds gapopen scoring) (toBacktrack t (undefined :: Id a -> Id a)) (chr i1) (chr i2)
+{-# NoInline alignGlobalBacktrack #-}
+
+{-
+-- | Backtrack the alignment
+
+sAlign :: Monad m => STwoWay m Aligned (S.Stream m Aligned) (Maybe InternedMultiChar,InternedMultiChar) ()
+sAlign = STwoWay
+  { loop_step = \(w1,w2) (Z:.():.(_,c)) -> ( w1 ++ ["-"], w2 ++ [c]   ) -- (w1++padd "" c, w2++prnt c "")
+  , step_loop = \(w1,w2) (Z:.(_,c):.()) -> ( w1 ++ [c]  , w2 ++ ["-"] ) -- (w1++prnt c "", w2++padd "" c)
+  , step_step = \(w1,w2) (Z:.(_,a):.(_,b)) -> ( w1 ++ [a], w2 ++ [b] ) -- (w1++prnt a b,w2++prnt b a)
+  , nil_nil   = const ([],[])
+  , h         = return . id
+  } where prnt x z = printAligned x [z]
+          padd x z = printAlignedPad '-' x [z]
+{-# INLINE sAlign #-}
+
+-- | Wrap calculations
+
+twoWay dS gapOpen scores i1 i2 = (ws ! (Z:.pointL 0 n1:.pointL 0 n2), bt) where
+  ws = unsafePerformIO (twoWayFill dS gapOpen scores i1 i2)
+  n1 = V.length i1
+  n2 = V.length i2
+  bt = backtrack dS gapOpen scores i1 i2 ws
+{-# NOINLINE twoWay #-}
+
+-- | Forward phase
+
+twoWayFill
+  :: Double
+  -> Double
+  -> Scores
+  -> V.Vector InternedMultiChar
+  -> V.Vector InternedMultiChar
+  -> IO (PA.Unboxed (Z:.PointL:.PointL) Double)
+twoWayFill dS gapOpen scores i1 i2 = do
+  let n1 = V.length i1
+  let n2 = V.length i2
+  !t' <- newWithM (Z:.pointL 0 0:.pointL 0 0) (Z:.pointL 0 n1:.pointL 0 n2) 0
+  let w = mTbl (Z:.EmptyT:.EmptyT) t'
+  fillTable2 $ gTwoWay (sScore dS gapOpen scores) w (chrLeft i1) (chrLeft i2) Empty Empty
+  freeze t'
+{-# NOINLINE twoWayFill #-}
+
+backtrack
+  :: Double
+  -> Double
+  -> Scores
+  -> V.Vector InternedMultiChar
+  -> V.Vector InternedMultiChar
+  -> PA.Unboxed (Z:.PointL:.PointL) Double
+  -> [Aligned]
+backtrack dS gapOpen scores i1 i2 tbl = unId . S.toList . unId $ g $ Z:.pointL 0 n1 :.pointL 0 n2 where
+  n1 = V.length i1
+  n2 = V.length i2
+  w :: DefBtTbl Id (Z:.PointL:.PointL) Double Aligned
+  w = btTbl (Z:.EmptyT:.EmptyT) tbl (g :: (Z:.PointL:.PointL) -> Id (S.Stream Id Aligned))
+  (Z:.(_,g)) = gTwoWay (sScore dS gapOpen scores <** sAlign) w (chrLeft i1) (chrLeft i2) Empty Empty
+{-# NOINLINE backtrack #-}
+
+-}
+
diff --git a/Linguistics/TwoWay/Simple.hs b/Linguistics/TwoWay/Simple.hs
new file mode 100644
--- /dev/null
+++ b/Linguistics/TwoWay/Simple.hs
@@ -0,0 +1,150 @@
+{-# LANGUAGE RecordWildCards #-}
+{-# LANGUAGE OverloadedStrings #-}
+{-# LANGUAGE TypeOperators #-}
+{-# LANGUAGE BangPatterns #-}
+{-# LANGUAGE MultiWayIf #-}
+{-# LANGUAGE NoMonomorphismRestriction #-}
+
+{-# OPTIONS_GHC -fno-liberate-case #-}
+
+module Linguistics.TwoWay.Simple where
+
+import           Data.ByteString.Char8 (ByteString)
+import           Data.Vector.Fusion.Util (Id(..))
+import           GHC.Exts
+import qualified Data.ByteString.Char8 as B
+import qualified Data.List as L
+import qualified Data.Text as T
+import qualified Data.Text.Encoding as T
+import qualified Data.Vector.Fusion.Stream.Monadic as SM
+--import qualified Data.Vector.Fusion.Stream as S
+import qualified Data.Vector.Unboxed as VU
+import           Data.Vector.Unboxed (Vector)
+import           System.IO.Unsafe (unsafePerformIO)
+import           Data.Sequence (Seq)
+import           Data.FMList (FMList)
+import           Data.Text (Text)
+import           Data.Stringable (toText)
+
+import           ADP.Fusion
+import           Data.PrimitiveArray
+import           DP.Alignment.Global.Tapes2
+import           NLP.Scoring.SimpleUnigram
+import           NLP.Text.BTI
+
+import Linguistics.Common
+--import Linguistics.TwoWay.Common
+
+
+--type IMC = InternedMultiChar
+type SigT m x r = SigGlobal m x r BTI BTI
+
+sScore :: Monad m => SimpleScoring -> SigT m Double Double
+sScore ss@SimpleScoring{..} = SigGlobal
+  { delin = \ww (Z:.c:._)     -> ww + gapScore
+  , indel = \ww (Z:._:.c)     -> ww + gapScore
+  , align = \ww (Z:.l:.u) -> ww + scoreUnigram ss l u
+  , done = const 0
+  , h         = SM.foldl' max (-888888)
+  }
+{-# Inline sScore #-}
+
+sBacktrack :: Monad m => SigT m (FMList (BTI,BTI)) [FMList (BTI,BTI)]
+sBacktrack = backtrack "-" "-"
+{-# Inline sBacktrack #-}
+
+-- | Create a backtracking function
+--
+-- TODO includes scores as well?
+
+sBacktrackFun :: Monad m => SigT m (FMList [Text]) [FMList [Text]]
+sBacktrackFun = backtrackFun f g "-" "-" where
+  f c d = [toText c, toText d]
+  g c d = [toText c, toText d]
+
+alignGlobal :: SimpleScoring -> Int -> Vector BTI -> Vector BTI -> (Double,[[[Text]]])
+alignGlobal scoring k i1 i2 = (d, take k bs) where
+  n1 = VU.length i1 ; n2 = VU.length i2
+  !(Z:.t) = alignGlobalForward scoring i1 i2
+  d = unId $ axiom t
+  bs = alignGlobalBacktrack scoring i1 i2 t
+{-# NoInline alignGlobal #-}
+
+alignGlobalForward :: SimpleScoring -> Vector BTI -> Vector BTI -> Z:.ITbl Id Unboxed (Z:.PointL I:.PointL I) Double
+alignGlobalForward scoring i1 i2 = {-# SCC "alignGlobalForward" #-} mutateTablesDefault $
+  gGlobal (sScore scoring)
+    (ITbl 0 0 (Z:.EmptyOk:.EmptyOk) (fromAssocs (Z:.PointL 0:.PointL 0) (Z:.PointL n1:.PointL n2) (-999999) []))
+    (chr i1) (chr i2)
+  where n1 = VU.length i1
+        n2 = VU.length i2
+{-# NoInline alignGlobalForward #-}
+
+alignGlobalBacktrack :: SimpleScoring -> Vector BTI -> Vector BTI -> ITbl Id Unboxed (Z:.PointL I:.PointL I) Double -> [[[Text]]]
+alignGlobalBacktrack scoring i1 i2 t = {-# SCC "alignGlobalBacktrack" #-} L.map runBacktrack . unId $ axiom b
+  where (Z:.b) = gGlobal (sScore scoring <|| sBacktrackFun) (toBacktrack t (undefined :: Id a -> Id a)) (chr i1) (chr i2)
+{-# NoInline alignGlobalBacktrack #-}
+
+-- | Decoupling the forward phase for CORE observation.
+
+{-
+alignGlobalForward :: Vector IMC -> Vector IMC -> Z:.(ITbl Id Unboxed (Z:.PointL:.PointL) Double)
+alignGlobalForward i1 i2 = let n1 = VU.length i1; n2 = VU.length i2 in mutateTablesDefault $
+  gGlobal score
+    (ITbl 0 0 (Z:.EmptyOk:.EmptyOk) (PA.fromAssocs (Z:.PointL 0:.PointL 0) (Z:.PointL n1:.PointL n2) (-999999) []))
+    (chr i1) (chr i2)
+{-# NoInline runNeedlemanWunschForward #-}
+-}
+
+
+
+{-
+sAlign :: Monad m => STwoWay m Aligned (S.Stream m Aligned) InternedMultiChar ()
+sAlign = STwoWay
+  { loop_step = \[w1,w2] (Z:.():.c) -> [ "-" : w1 , c   : w2 ]
+  , step_loop = \[w1,w2] (Z:.c:.()) -> [ c   : w1 , "-" : w2 ]
+  , step_step = \[w1,w2] (Z:.a:.b) ->  [ a   : w1 , b   : w2 ]
+  , nil_nil   = const [[],[]]
+  , h         = return . id
+  }
+{-# INLINE sAlign #-}
+
+--twoWay :: VU.Vector Char -> VU.Vector Char -> [Double] -> Double -> V.Vector ByteString -> V.Vector ByteString -> (Double
+twoWay simpleScoring i1 i2 = (ws ! (Z:.pointL 0 n1:.pointL 0 n2), bt) where
+  ws = unsafePerformIO $ twoWayFill simpleScoring i1 i2
+  n1 = V.length i1
+  n2 = V.length i2
+  bt = backtrack simpleScoring i1 i2 ws
+{-# NOINLINE twoWay #-}
+
+twoWayFill
+  :: SimpleScoring
+  -> V.Vector InternedMultiChar
+  -> V.Vector InternedMultiChar
+  -> IO (PA.Unboxed (Z:.PointL:.PointL) Double)
+twoWayFill simpleScoring i1 i2 = do
+  let n1 = V.length i1
+  let n2 = V.length i2
+  !t' <- newWithM (Z:.pointL 0 0:.pointL 0 0) (Z:.pointL 0 n1:.pointL 0 n2) 0
+  let w = mTblD (Z:.EmptyOk:.EmptyOk) t'
+  fillTable2 $ gTwoWay (sScore simpleScoring) w (chr i1) (chr i2) Empty Empty
+  freeze t'
+{-# NOINLINE twoWayFill #-}
+
+backtrack
+  :: SimpleScoring
+  -> V.Vector InternedMultiChar
+  -> V.Vector InternedMultiChar
+  -> PA.Unboxed (Z:.PointL:.PointL) Double
+  -> [Aligned]
+backtrack simpleScoring i1 i2 tbl = unId . S.toList . unId $ g $ Z:.pointL 0 n1 :.pointL 0 n2 where
+  n1 = V.length i1
+  n2 = V.length i2
+  w = btTblD (Z:.EmptyOk:.EmptyOk) tbl (g :: (Z:.PointL:.PointL) -> Id (S.Stream Id Aligned))
+  (Z:.(_,g)) = gTwoWay (sScore simpleScoring <** sAlign) w (chr i1) (chr i2) Empty Empty
+{-# NOINLINE backtrack #-}
+
+--test s = twoWay (VU.fromList "aeiou") (VU.fromList $ ['a' .. 'z'] L.\\ "aeiou") [3,1,1,0,0,-1] (-1) s' s' where
+--  s' = V.fromList $ L.map (B.pack . (:[])) $ s
+
+-}
+
diff --git a/Linguistics/Word.hs b/Linguistics/Word.hs
new file mode 100644
--- /dev/null
+++ b/Linguistics/Word.hs
@@ -0,0 +1,77 @@
+{-# LANGUAGE OverloadedStrings #-}
+{-# LANGUAGE BangPatterns #-}
+
+-- | A single word in a language. Uses a 'MultiChar' encoding for the actual
+-- characters. MultiChar encodings need to be decoded for printing on screen.
+
+module Linguistics.Word where
+
+import           Control.Applicative
+import           Control.DeepSeq
+import           Data.ByteString (ByteString)
+import           Data.Interned
+import           Data.Interned.ByteString
+import qualified Data.Attoparsec.ByteString as AB
+import qualified Data.Attoparsec.ByteString.Char8 as AB hiding (takeWhile1)
+import qualified Data.Attoparsec.ByteString.Lazy as ABL
+import qualified Data.ByteString as B
+import qualified Data.ByteString.Lazy as BL hiding (unpack)
+import qualified Data.ByteString.Lazy.Char8 as BL hiding (readFile)
+import qualified Data.ByteString.Short as S
+import qualified Data.Vector.Unboxed as VU
+import           Prelude hiding (Word)
+import           Data.Stringable
+
+import           NLP.Text.BTI
+
+
+
+-- | A single word we want to align to another word. It comes with an id (here
+-- 9), the language name (which we intern), a word class (interned as well),
+-- the length of the word (so that we don't have to check wordWord length and
+-- check for word delims), and finally the word itself. Indivitual 'MultiChar'
+-- characters are interned to reduce memory cost (and we might want to do stuff
+-- with the Id's).
+--
+--  9 Albanian_Tosk 1.214 6 \' b a lʸ t ə
+--
+
+data Word = Word
+  { wordID     :: {-# UNPACK #-} !Int
+  , wordClass  :: {-# UNPACK #-} !BTI -- InternedByteString
+  , wordLang   :: {-# UNPACK #-} !BTI -- InternedByteString
+  , wordLength :: {-# UNPACK #-} !Int
+  , wordWord   :: {-# UNPACK #-} !(VU.Vector BTI)
+  }
+  deriving (Show,Eq,Ord)
+
+instance NFData Word where
+  rnf !(Word {}) = ()
+
+parseWord :: BL.ByteString -> Word
+parseWord w = case ABL.eitherResult (ABL.parse go w) of
+                Left  err -> error err
+                Right p   -> force p
+  where
+    go = Word <$> AB.decimal
+              <*  AB.many1 AB.space
+              <*> (wW <$> wrd)
+              <*> (wW <$> wrd)
+              <*> AB.decimal
+              <*  AB.many1 AB.space
+              <*> ((VU.fromList . map wW) <$> (AB.takeWhile1 (not . AB.isHorizontalSpace) `AB.sepBy` AB.space))
+    wrd  = AB.takeWhile1 (not . AB.isHorizontalSpace) <* AB.space
+    wW   = fromByteString
+
+addWordDelims :: Word -> Word
+addWordDelims w
+  | VU.length ww >= 2 && VU.head ww == "^" && VU.last ww == "$" = w
+  | otherwise = w { wordWord = "^" `VU.cons` wordWord w `VU.snoc` "$" }
+  where ww = wordWord w
+
+removeWordDelims :: Word -> Word
+removeWordDelims w
+  | VU.length ww >= 2 && VU.head ww == "^" && VU.last ww == "$" = w { wordWord = VU.init . VU.tail $ wordWord w }
+  | otherwise = w
+  where ww = wordWord w
+
diff --git a/README.md b/README.md
new file mode 100644
--- /dev/null
+++ b/README.md
@@ -0,0 +1,177 @@
+[![Build Status](https://travis-ci.org/choener/WordAlignment.svg?branch=master)](https://travis-ci.org/choener/WordAlignment)
+
+# Word alignments in natural languages
+
+This library and program are designed for the alignment of *words* in human
+languages. Each word is encoded as a list of *characters*. A single
+*character*, however, is encoded as a *list of unicode symbols*, not just a
+single symbol.
+
+This particular encoding is necessary because there is no general one-to-one
+mapping of atomic alphabet symbols to unicode characters. Just consider
+character decorations, such as *Umlaute* (even though Umlaute are available in
+unicode).
+
+As user, you send a list to stdin that is formatted as follows (with all fields
+mandatory; the tab symbol being the separator between each column):
+
+* word id
+* language name
+* meaning identifier (this is a string, not a number)
+* length of the word
+* space-separated characters (each character is actually a string)
+
+(In case you read the plain-text version of this document, the 4 whitespace
+characters should be left out.)
+
+    0	Albanian_Tosk	1.100	5	\' b o t ə
+    2	Albanian_Tosk	1.100	10	r̃ o k u lʸ i a\' lʸ e m
+
+
+
+The WordAlignment program comes with two modes, *twowaysimple* and *twoway*.
+
+## TwoWay - Simple
+
+```WordAlign twowaysimple``` aligns words based on a simple scoring model. Gaps
+are scored with linear costs. Matches are scored based on a simple scoring file
+handling unigrams of characters. Even the simple model allows for the concept
+of equivalence classes. This makes it possible to not only score exact matches,
+but to give somewhat high scores to, say, two vowels that should be matched.
+
+The following command-line options are provided:
+
+    --scorefile=ITEM
+    --lpblock=ITEM,ITEM
+    --showmanual
+    --prettystupid
+    --outfile=ITEM
+
+```--scorefile``` is the simple score file to be used by the mode. the
+*defaultSimpleScoring* file can be used as a template.
+
+```--lpblock``` expects a pair of language names (Breton,Breton) or a pair of
+integers (3,3 or 4,6) and will then align only the given language pairs with
+each other. This option should be very helpful in case you want to parallelize
+the program.
+
+```--showmanual``` will show this manual in plain text.
+
+```--prettystupid``` will show a progress bar of the current language pair.
+It's pretty and helpful with smaller tasks but should not be used when you
+parallelize on a grid engine.
+
+```--outfile``` writes to the given output file, not stdout. Actually required
+when ```--prettystupid``` is active.
+
+```--nobacktrack``` disables backtracking. Sometimes just the alignment score
+is enough.
+
+
+
+## TwoWay (Complex Scoring)
+
+The complex scoring model uses linear gap costs. In contrast to the simple
+model above, however, character matching is now performed in a bigram context.
+
+The required score file is currently using an in-house format with the
+following columns all required (with whitespace, not tab between the entries):
+
+* language name
+* character (bigram 1.1)
+* character (bigram 1.2)
+* language name
+* character (bigram 2.1)
+* character (bigram 2.2)
+* score
+
+Three example lines
+
+    Albanian_Tosk \' a Albanian_Tosk \' a 4.25238
+    Albanian_Tosk \' a Albanian_Tosk \' b 0.402228
+    Albanian_Tosk \' a Albanian_Tosk \' g 1.07432
+
+In addition to the scoring file, set via ```--scorefile```, the default score
+constant and the gap cost constant need to be set.
+
+```--bigramdef=NUM``` is the score given to unknown matches.
+
+```--gapopen=NUM``` is the score given to each gap character (and not just the
+opening score)
+
+```--lpblock``` as above
+
+```--showmanual``` as above
+
+```--prettystupid``` as above
+
+```--outfile``` as above
+
+```--nobacktrack``` as above
+
+An example output is given below.
+
+The output are four lines for each alignment. An info line with the word ids
+(IDS), the alignment score (SCORE), the normalized scores (NSCORE) and the
+actual words, started by (WORDS) and interleaved by (WORD). The next two lines
+are the alignment, with deletions showning up as minus symbols (---) in the
+deletion field. Note that a deletion does not delete a character from the
+input, it merely aligns an existing character in one alignment with the symbol
+for deletion (--) in the other. The final line provides the per-column score
+for the alignment. After the alignment follows one empty line.
+
+The normalized score is defined as SCORE / maximum of input word lengths
+
+```cat albanian.input | head -n 3 | ./dist/build/WordAlign/WordAlign twoway -s albanian.scores```
+
+yields:
+
+    IDS: 1 2 SCORE: 32.85 NSCORE: 5.48    WORDS: ^ d o u a r $   WORD   ^ d o u a r $
+       ^   d   o   u   a   r   $
+       ^   d   o   u   a   r   $
+     0.0 4.8 5.9 4.1 6.6 4.6 6.8
+    
+    IDS: 1 3 SCORE: -12.36 NSCORE: -1.77    WORDS: ^ d o u a r $   WORD   ^ p o u l t r $
+         ^     d     -     o     u     a     r     -     -     $
+         ^     p     o     -     u     -     l     t     r     $
+       0.0   0.3  -5.0  -5.0   4.1  -5.0 -20.0  -5.0  -5.0   6.8
+
+
+
+## Performance Notes
+
+Measured on a core i5-3570K @ 3.40 GHz; single-threaded.
+
+The program is not compiled for multi-threading, if you need this consider the
+```--lpblock``` option first. Otherwise, send a mail.
+
+The running time for calculating 100 000 alignments is:
+
+    Mode              Seconds     Alignments per Second
+    ====              =======     =====================
+    TwoWay Simple:     6.7 s        ~ 15 000
+    TwoWay Complex:   15.8 s        ~  6 300
+
+Disabling backtracking (to get just the alignment scores) improves performance
+by roughly a factor of ```x 2```. Words are very short, backtracking overhead
+is quite large!
+
+As in: the number of actual /unicode/ symbols is approximately the same as the
+number of forward DP cells to be filled, since each /character/ can be a
+combination of multiple unicdoe symbols.
+
+
+
+## Three- and Four-way Alignments
+
+These are currently disabled. If you need them, consider contacting me.
+
+
+
+#### Contact
+
+Christian Hoener zu Siederdissen  
+Leipzig University, Leipzig, Germany  
+choener@bioinf.uni-leipzig.de  
+http://www.bioinf.uni-leipzig.de/~choener/  
+
diff --git a/Setup.hs b/Setup.hs
new file mode 100644
--- /dev/null
+++ b/Setup.hs
@@ -0,0 +1,2 @@
+import Distribution.Simple
+main = defaultMain
diff --git a/WordAlignment.cabal b/WordAlignment.cabal
new file mode 100644
--- /dev/null
+++ b/WordAlignment.cabal
@@ -0,0 +1,159 @@
+name:           WordAlignment
+version:        0.1.0.0
+author:         Christian Hoener zu Siederdissen, 2013-2015
+copyright:      Christian Hoener zu Siederdissen, 2013-2015
+homepage:       https://github.com/choener/WordAlignment
+bug-reports:    https://github.com/choener/WordAlignment/issues
+maintainer:     choener@bioinf.uni-leipzig.de
+category:       Linguistics
+license:        GPL-3
+license-file:   LICENSE
+build-type:     Simple
+stability:      experimental
+cabal-version:  >= 1.10.0
+tested-with:    GHC == 7.8.4, GHC == 7.10.2
+synopsis:       Bigram word pair alignments.
+description:
+                The library provides fast dynamic programming algorithms to
+                align word pairs using either a simple or a bigram scoring
+                scheme.
+
+
+
+Extra-Source-Files:
+  README.md
+  changelog.md
+
+
+
+library
+  build-depends: base                       >= 4.7      && < 4.9
+               , ADPfusion                  >= 0.4.0.2  && < 0.5.1
+               , AlignmentAlgorithms        >= 0.0.2    && < 0.0.3
+               , attoparsec                 >= 0.10     && < 0.14
+               , bytestring
+               , containers
+               , control-monad-omega        >= 0.3      && < 0.4
+               , deepseq                    >= 1.3      && < 1.5
+               , file-embed                 >= 0.0.6    && < 0.1
+               , fmlist                     >= 0.9      && < 0.10
+               , FormalGrammars             >= 0.2.1    && < 0.2.2
+               , ghc-prim
+               , GrammarProducts            >= 0.1.1    && < 0.1.2
+               , hashable                   >= 1.1      && < 1.3
+               , intern                     >= 0.9      && < 0.10
+               , lens                       >= 4.0      && < 4.14
+               , LinguisticsTypes           >= 0.0.0    && < 0.0.1
+               , NaturalLanguageAlphabets   >= 0.1.0    && < 0.2.0
+               , primitive                  >= 0.5      && < 0.7
+               , PrimitiveArray             >= 0.6.0    && < 0.7.1
+               , strict                     >= 0.3.2    && < 0.3.3
+               , stringable                 >= 0.1.2    && < 0.1.4
+               , template-haskell
+               , text                       >= 1.0      && < 1.3
+               , text-format                >= 0.3      && < 0.4
+               , transformers
+               , tuple-th                   >= 0.2.4    && < 0.2.6
+               , unordered-containers       >= 0.2.3    && < 0.2.6
+               , vector                     >= 0.10     && < 0.12
+  exposed-modules:
+    Linguistics.Bigram
+    Linguistics.Common
+--    Linguistics.FourWay
+--    Linguistics.FourWay.Backward
+--    Linguistics.FourWay.Common
+--    Linguistics.FourWay.Forward
+--    Linguistics.ThreeWay
+--    Linguistics.ThreeWay.Bigram
+--    Linguistics.ThreeWay.Common
+--    Linguistics.ThreeWay.Simple
+--    Linguistics.TwoWay
+--    Linguistics.TwoWay.AdvancedBigram
+    Linguistics.TwoWay.Bigram
+--    Linguistics.TwoWay.Common
+    Linguistics.TwoWay.Simple
+    Linguistics.Word
+  default-language:
+    Haskell2010
+  default-extensions: BangPatterns
+                    , DeriveGeneric
+                    , FlexibleContexts
+                    , FlexibleInstances
+                    , OverloadedStrings
+                    , PatternGuards
+                    , QuasiQuotes
+                    , StandaloneDeriving
+                    , TemplateHaskell
+                    , TypeFamilies
+                    , TypeOperators
+  ghc-options:
+    -fsimpl-tick-factor=900
+    -O2
+
+
+
+executable WordAlign
+  build-depends: base
+               , ascii-progress             >= 0.3.2    && < 0.4
+               , bytestring
+               , cmdargs                    == 0.10.*
+               , containers
+               , file-embed
+               , intern
+               , LinguisticsTypes
+               , NaturalLanguageAlphabets
+               , parallel                   >= 3.2      && < 3.3
+               , strict
+               , text
+               , unordered-containers
+               , vector
+               , WordAlignment
+  main-is:
+    WordAlign.hs
+  hs-source-dirs:
+    src
+  default-language:
+    Haskell2010
+  default-extensions: BangPatterns
+                    , DeriveDataTypeable
+                    , OverloadedStrings
+                    , PatternGuards
+                    , RecordWildCards
+                    , ScopedTypeVariables
+                    , TemplateHaskell
+  ghc-options:
+    -fsimpl-tick-factor=900
+    -rtsopts
+    -O2
+    -funfolding-use-threshold100
+    -funfolding-keeness-factor100
+
+
+
+test-suite properties
+  type:
+    exitcode-stdio-1.0
+  main-is:
+    properties.hs
+  ghc-options:
+    -threaded -rtsopts -with-rtsopts=-N
+  hs-source-dirs:
+    tests
+  default-language:
+    Haskell2010
+  default-extensions: BangPatterns
+                    , ScopedTypeVariables
+                    , TemplateHaskell
+  build-depends: base
+               , QuickCheck
+               , test-framework               >= 0.8  && < 0.9
+               , test-framework-quickcheck2   >= 0.3  && < 0.4
+               , test-framework-th            >= 0.2  && < 0.3
+               , WordAlignment
+
+
+
+source-repository head
+  type: git
+  location: git://github.com/choener/WordAlignment
+
diff --git a/changelog.md b/changelog.md
new file mode 100644
--- /dev/null
+++ b/changelog.md
@@ -0,0 +1,27 @@
+0.1.0.0
+-------
+
+- using BTI types instead of IMMC
+- backtracking pretty printing with Text-Builders
+- updated README.md (TODO!)
+
+0.0.4.0
+-------
+
+- pretty, because we can!
+
+0.0.3.1
+-------
+
+- bugfixes
+
+0.0.2.0
+-------
+
+- partially rewritten
+
+0.0.1.0
+-------
+
+- internal, non-release version
+
diff --git a/src/WordAlign.hs b/src/WordAlign.hs
new file mode 100644
--- /dev/null
+++ b/src/WordAlign.hs
@@ -0,0 +1,584 @@
+
+{-# Options_GHC -fno-cse #-}
+
+module Main where
+
+import           Control.Arrow ((***))
+import           Control.Concurrent (threadDelay)
+import           Control.Monad (forM_,when)
+import           Control.Parallel.Strategies (rdeepseq,parMap,parBuffer,using,evalTuple2,r0,rseq,evalBuffer,parList,evalList,evalTuple3,evalTuple5)
+import           Data.FileEmbed
+import           Data.Function (on)
+import           Data.List (sortBy,groupBy,intersperse,genericLength)
+import           Data.Maybe (isJust)
+import           Data.Sequence (Seq)
+import           Data.Strict.Tuple
+import           Data.Text (Text)
+import           Data.Version (showVersion)
+import           Debug.Trace
+import           Debug.Trace (trace)
+import           GHC.Conc (numCapabilities)
+import           GHC.IO.Handle
+import           Prelude hiding (Word)
+import qualified Data.ByteString.Char8 as BS
+import qualified Data.ByteString.Lazy.Char8 as BL
+import qualified Data.HashMap.Strict as HM
+import qualified Data.Map.Strict as M
+import qualified Data.Set as S
+import qualified Data.Text as T
+import qualified Data.Text.Lazy.Builder as TL
+import qualified Data.Text.Lazy.IO as TL
+import qualified Data.Vector as V
+import qualified Data.Vector.Unboxed as VU
+import qualified System.Console.AsciiProgress as CAP
+import           System.Console.CmdArgs
+import           System.Exit
+import           System.IO
+import           Text.Printf
+import           Text.Read (readMaybe)
+
+import           NLP.Scoring.SimpleUnigram
+import           NLP.Scoring.SimpleUnigram.Import
+import           NLP.Text.BTI
+
+import           Linguistics.Bigram
+import           Linguistics.Common
+import           Linguistics.TwoWay.Simple
+import           Linguistics.Word (parseWord,Word(..),addWordDelims)
+import qualified Linguistics.TwoWay.Bigram as BI
+
+import           Paths_WordAlignment (version)
+
+
+
+data Config
+  = TwoWaySimple
+    { scoreFile     :: String
+    , lpblock       :: Maybe (String,String)
+    , showManual    :: Bool
+    , prettystupid  :: Bool
+    , outfile       :: String
+    , nobacktrack   :: Bool
+    }
+  | TwoWay
+    { scoreFile     :: String
+    , bigramDef     :: Double
+--    , unibiDef      :: Double
+    , gapOpen       :: Double
+--    , gapExtend     :: Double
+    , lpblock       :: Maybe (String,String)
+    , showManual    :: Bool
+    , prettystupid  :: Bool
+    , outfile       :: String
+    , nobacktrack   :: Bool
+    }
+  deriving (Show,Data,Typeable)
+
+twowaySimple = TwoWaySimple
+  { scoreFile  = def &= help "the file to read the simple scores from"
+  , lpblock    = Nothing
+  , showManual = False    &= help "show the manual and quit"
+  , prettystupid = False
+  , outfile      = ""
+  , nobacktrack   = False
+  } &= help "Align words based on a simple, linear scoring model for gaps, and an unigram model for matches."
+
+twoway = TwoWay
+  { scoreFile  = "" &= help "the file to read the scores from"
+  , bigramDef  = (-20) &= help "score to use for unknown bigram matches"
+--  , unibiDef   = (-5) &= help "score to close a gap if the closing characters are unknown"
+  , gapOpen    = (-5) &= help "cost to open a gap"
+--  , gapExtend  = (-1) &= help "cost to extend a gap" -- we currently do not use the affine cost model. Should come later once a generic affine system is written in AlignmentAlgorithms
+  , lpblock    = Nothing  &= help "compare ONLY the given pair of languages: i.e 'Breton','Breton' or 2,3  (with the latter notation '2' being the 2nd language in the input file)"
+  , prettystupid = False  &= help "a pretty stupid developer option"
+  , outfile      = ""     &= help "write output to this file"
+  , showManual = False
+  , nobacktrack   = False
+  } &= help "Align words based on a linear scoring model for gaps, but with bigram-based scoring for matches."
+
+config = [twowaySimple, twoway]
+  &= program "WordAlign"
+  &= summary ("WordAlign " ++ showVersion version ++ " (c) Christian Höner zu Siederdissen 2014--2015, choener@bioinf.uni-leipzig.de")
+
+embeddedManual = $(embedFile "README.md")
+
+
+
+main = do
+  o <- cmdArgs $ modes config
+  when (showManual o) $ do
+    BS.putStrLn embeddedManual
+    exitSuccess
+  when (prettystupid o && null (outfile o)) $ do
+    putStrLn "The --prettystupid mode requires giving and --outfile"
+    exitFailure
+  (if prettystupid o then CAP.displayConsoleRegions else id) $ do
+    ws <- BL.getContents >>= return . map parseWord . BL.lines
+    case o of
+      TwoWaySimple{..} -> run2Simple o (blockSelection2 lpblock ws)
+      TwoWay{..}       -> run2 o (blockSelection2 lpblock $ map addWordDelims ws)
+
+
+
+-- | Given a @Config@ and a @List of Lists of Word-Pairs@ align everything.
+
+run2Simple :: Config -> [[(Word,Word)]] -> IO ()
+run2Simple TwoWaySimple{..} wss = do
+  hndl <- if null outfile then return stdout else openFile outfile AppendMode
+  scoring <- simpleScoreFromFile scoreFile
+  let wsslen = length wss
+  -- for each language pairing
+  forM_ (zip [1 :: Int ..] wss) $ \(k,ws) -> do
+    pg <- if prettystupid
+            then do
+              let len = genericLength ws
+              let (x,y) = head ws
+              printf "[%4d / %4d] Language pair: %s / %s with %d alignments:\n" k wsslen (show $ wordLang x) (show $ wordLang y) len
+              Just <$> CAP.newProgressBar CAP.def { CAP.pgWidth = 100, CAP.pgTotal = len }
+            else return Nothing
+    let alis = [ (x,y,d,bts,sss)
+               | (x,y) <- ws
+               , let (d,bts') = alignGlobal scoring 1 (wordWord x) (wordWord y)  -- calculate score and all co-optimal backtraces
+               , let bts = if nobacktrack then [] else bts'
+               , let sss = TL.toLazyText $ buildAlignmentSimple 0 ([x,y],(d,bts)) -- make nice strings
+               ]
+    -- print the actual alignments
+    forM_ alis $ \(x,y,d,bts,sss) -> do
+      TL.hPutStr hndl sss
+      when (isJust pg) $ let Just pg' = pg in CAP.tick pg'
+
+-- | Given a @Config@ and a @List of List of Word-Pairs@ align everything.
+
+run2 :: Config -> [[(Word,Word)]] -> IO ()
+run2 TwoWay{..} wss = do
+  hndl <- if null outfile then return stdout else openFile outfile AppendMode
+  let wsslen = length wss
+  -- build up scoring system
+  let chkLs = S.fromList . map wordLang . concat . map (\(x,y) -> [x,y]) . map head $ wss
+  scoring <- BL.readFile scoreFile >>= return . generateLookups chkLs (-999999)
+  -- for each language pairing
+  forM_ (zip [1 :: Int ..] wss) $ \(k,ws) -> do
+    pg <- if prettystupid
+            then do
+              let len = genericLength ws
+              let (x,y) = head ws
+              printf "[%4d / %4d] Language pair: %s / %s with %d alignments:\n" k wsslen (show $ wordLang x) (show $ wordLang y) len
+              Just <$> CAP.newProgressBar CAP.def { CAP.pgWidth = 100, CAP.pgTotal = len }
+            else return Nothing
+    -- get score pairing
+    let (hx,hy) = head ws
+    let sco = getScores2 scoring (wordLang hx) (wordLang hy)
+    -- align the words the in @ws@ pairing
+    let as = map (\(x,y) -> ( let (d,bts) = BI.alignGlobal bigramDef gapOpen sco 1 (wordWord x) (wordWord y)
+                              in  TL.toLazyText $ buildAlignment (-1) ([x,y],(d,if nobacktrack then [] else bts))
+                            )
+                 ) ws
+    forM_ (as) {- `using` parBuffer 100 rseq)-} $ \ali -> do
+      when (isJust pg) $ let Just pg' = pg in CAP.tick pg'
+      TL.hPutStr hndl ali
+
+-- | Given a set of words from different languages, we want to do two
+-- things:
+--
+-- (i) We want to block alignments into groups. This will make alignments
+-- faster as we do not have to reload the scoring system every time.
+--
+-- (ii) We want to decide on alignment maybe only a subset of words. We
+-- make this selection rather coarse-grained by giving just the name or
+-- running id of the language. I.e you can type @Breton@ or @1@ (if Breton
+-- happens to be the first language). We allow numeric identification as
+-- that is easier for scripts to handle.
+
+blockSelection2 :: Maybe (String,String) -> [Word] -> [[(Word,Word)]]
+blockSelection2 s ws = go (mkCmp s)
+        -- grouping words by their languages
+  where gs = zip [1..] $ groupBy ((==) `on` wordLang) ws
+        ls = M.fromList $ map (\(k,(v:_)) -> (show $ wordLang v,k)) gs
+        go f = [ [ (x,y)
+                 | (kk,x) <- zip [1..] xs, (ll,y) <- zip [1..] ys
+                 , k/=l || kk < ll
+                 ]
+               | (k,xs) <- gs, (l,ys) <- gs -- @k@ and @l@ are word groups, i.e. language identifiers
+               , f k l
+               ]
+        -- Create comparator function for group selection
+        mkCmp :: Maybe (String,String) -> (Int -> Int -> Bool)
+        -- nothing selected, produce all upper triangular groups
+        mkCmp Nothing = \k l -> k <= l
+        mkCmp (Just (a,b))
+        -- we have two strings that actually are numbers
+          | Just a' <- readMaybe a
+          , Just b' <- readMaybe b = \k l -> a'==k && b'==l
+        -- we have two language names
+          | Just a' <- M.lookup a ls
+          , Just b' <- M.lookup b ls = \k l -> a'==k && b'==l
+        -- the user did provide crappy input
+        mkCmp (Just (a,b)) = \k l -> traceShow ("Unknown languages or ID's: " ++ a ++ " , " ++ b) $ False
+
+-- | (write me)
+
+getScores2 :: Mapping -> Lang -> Lang -> Scores
+getScores2 ss a b
+  | Just z <- M.lookup (a:!:b) (lliid ss) = z
+  | otherwise = trace (printf "Language pair %s %s not found in mapping! Returning empty hashmap\n" (toUtf8String a) (toUtf8String b))
+                HM.empty
+
+-- | (write me)
+
+prettyAli2 :: Double -> [(BTI,BTI)] -> IO ()
+prettyAli2 d s = do
+  print d
+  forM_ s $ \(x,xs) -> do
+    putStr $ show x
+    putStr $ show xs
+  putStrLn ""
+  forM_ s $ \(_,y) -> do
+    putStr $ show y
+  putStrLn ""
+
+buildAlignmentSimple :: Double -> ([Linguistics.Word.Word],(Double,[[[Text]]])) -> TL.Builder
+buildAlignmentSimple k (ws,(s,(xs))) = TL.fromText hdr `mappend` ls `mappend` "\n" where
+  ids = concat . intersperse " " . map (show . wordID)   $ ws
+  wds = concat . intersperse "   WORD   " . map (concat . intersperse " " . map toUtf8String . VU.toList . wordWord) $ ws
+  ns = s / (maximum $ 1 : map ((+k) . fromIntegral . VU.length . wordWord) ws)
+  hdr = T.pack $ printf "IDS: %s SCORE: %.2f NSCORE: %.2f    WORDS: %s\n" ids s ns wds
+  ls  = case xs of [] -> "" ; [xs'] -> buildLines xs'
+
+buildAlignment :: Double -> ([Linguistics.Word.Word],(Double,[[[Text]]])) -> TL.Builder
+buildAlignment k (ws,(s,(xss))) = TL.fromText hdr `mappend` ls `mappend` "\n" where
+  ids = concat . intersperse " " . map (show . wordID)   $ ws
+  wds = concat . intersperse "   WORD   " . map (concat . intersperse " " . map toUtf8String . VU.toList . wordWord) $ ws
+  ns = s / (maximum $ 1 : map ((+k) . fromIntegral . VU.length . wordWord) ws)
+  hdr = T.pack $ printf "IDS: %s SCORE: %.2f NSCORE: %.2f    WORDS: %s\n" ids s ns wds
+  ls  = case xss of [] -> "" ; [xs'] -> buildLines $ ["^","^","0.0"] : xs'
+
+--printAlignment :: Double -> ([Linguistics.Word.Word],(Double,[[(IMCp,IMCp)]])) -> IO ()
+--printAlignment k (ws,(s,(xs))) = do
+--  let ids = concat . intersperse " " . map (show . wordID)   $ ws
+--  let wds = concat . intersperse "   WORD   " . map (concat . intersperse " " . map toUtf8String . VU.toList . wordWord) $ ws
+--  --let ns = s / (maximum $ 1 : map ((+k) . fromIntegral . VU.length . wordWord) ws)
+--  let ns = s / (maximum $ 1 : map ((+k) . fromIntegral . VU.length . wordWord) ws)
+--  printf "IDS: %s SCORE: %.2f NSCORE: %.2f    WORDS: %s\n" ids s ns wds
+--  let xs1 = map ({- tail . -} reverse . map Prelude.fst) $ xs
+--  let xs2 = map ({- tail . -} reverse . map Prelude.snd) $ xs
+--  mapM_ (putStrLn) (alignPretty $ xs1 ++ xs2)
+--  putStrLn ""
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+{-
+import           Control.Arrow
+import           Control.Monad (unless)
+import           Control.Monad (when)
+import           Control.Parallel.Strategies
+import           Data.ByteString (ByteString)
+import           Data.ByteString.Char8 (unpack)
+import           Data.Function
+import           Data.List (intersperse)
+import           Data.List (tails,genericLength,genericTake,genericDrop,group)
+import           Data.Ord
+import           Data.Strict.Tuple
+import           Data.Vector (fromList)
+import           Debug.Trace (trace)
+import qualified Data.ByteString as BS
+import qualified Data.ByteString.Char8 as BC
+import qualified Data.ByteString.Lazy.Char8 as BL
+import qualified Data.HashTable.IO as H
+import qualified Data.List as L
+import qualified Data.Map.Strict as M
+import qualified Data.Set as S
+import qualified Data.Vector as V
+import qualified Data.Vector.Unboxed as VU
+import           System.Console.CmdArgs
+import           System.IO.Unsafe (unsafePerformIO)
+import           Text.Printf
+
+import           NLP.Alphabet.MultiChar
+import           NLP.Scoring.SimpleUnigram
+import           NLP.Scoring.SimpleUnigram.Default
+import           NLP.Scoring.SimpleUnigram.Import
+
+import Linguistics.TwoWay.Simple
+{- we test interning with TwoWay alignments only
+import Linguistics.ThreeWay
+import Linguistics.FourWay
+-}
+import Linguistics.Bigram
+import Linguistics.Common
+import Linguistics.Word
+import Linguistics.TwoWay.AdvancedBigram
+
+data Config
+  = TwoWay
+    { scoreFile :: String
+    , bigramDef :: Double
+    , unibiDef  :: Double
+    , gapOpen :: Double
+    , gapExtend :: Double
+    , block :: Maybe (Integer,Integer)
+    , selfAlign :: Bool
+    }
+  | TwoWaySimple
+    { scoreFile :: String
+    , block :: Maybe (Integer,Integer)
+    , selfAlign :: Bool
+    }
+  {- NLA
+  | ThreeWay
+    { scoreFile :: String
+    , defaultScore :: Double
+    , gapOpen :: Double
+    , block :: Maybe (Integer,Integer)
+    }
+  | ThreeWaySimple
+    { scoreFile :: String
+    , gapOpen :: Double
+    , block :: Maybe (Integer,Integer)
+    }
+  | FourWay
+    { scoreFile :: String
+    , defaultScore :: Double
+    , gapOpen :: Double
+    , block :: Maybe (Integer,Integer)
+    }
+  | FourWaySimple
+    { scoreFile :: String
+    , gapOpen :: Double
+    , block :: Maybe (Integer,Integer)
+    }
+  -}
+  | Info
+    {
+    }
+  deriving (Show,Data,Typeable)
+
+twoway = TwoWay
+  { scoreFile = "" &= help "the file to read the scores from"
+  , bigramDef = (-20) &= help "score to use for unknown bigram matches"
+  , unibiDef  = (-5) &= help "score to close a gap if the closing characters are unknown"
+  , gapOpen = (-5) &= help "cost to open a gap"
+  , gapExtend = (-1) &= help "cost to extend a gap"
+  , block = Nothing &= help "when using --block N,k calculate only the k'th block (starting at 1) with length N. For parallelized computations."
+  , selfAlign = False &= help "align each word with itself as well"
+  } &= help "Align two words at a time for all ordered word combinations"
+
+twowaySimple = TwoWaySimple
+  { scoreFile = def &= help ""
+  }
+
+{- NLA
+threeway = ThreeWay
+  {
+  }
+
+threewaySimple = ThreeWaySimple
+  {
+  }
+
+fourway = FourWay
+  {
+  }
+
+fourwaySimple = FourWaySimple
+  {
+  }
+-}
+
+info = Info
+  {
+  }
+
+config = [twoway,twowaySimple, {- threeway,threewaySimple,fourway,fourwaySimple, -} info]
+  &= program "WordAlign"
+  &= summary "WordAlign v.0.0.1"
+
+main = do
+  o <- cmdArgs $ modes config
+  ws' <- BL.getContents >>= return . map parseWord . BL.lines
+  case o of
+    Info{} -> do
+      let l :: Integer = genericLength ws'
+      let c2 = l * (l-1) `div` 2 -- number of alignments
+      let t2 :: Double = fromIntegral c2 / 5000 / 60 / 60 -- approximate time in hours
+      let c3 = l * (l-1) * (l-2) `div` 3
+      let t3 :: Double = fromIntegral c3 / 5000 / 60 / 60 -- TODO fix time constant
+      let c4 = l * (l-1) * (l-2) * (l-3) `div` 4
+      let t4 :: Double = fromIntegral c4 / 5000 / 60 / 60 -- TODO fix time constant
+      printf "%d  %.1f    %d  %.1f    %d  %.1f\n" c2 t2 c3 t3 c4 t4
+    TwoWay{..} -> do
+      let ws = map addWordDelims ws'
+      let bs = blockWith block $ [ (a,b) | (a:as) <- tails ws, b <- if selfAlign then (a:as) else as ]
+      let chkLs = S.fromList . map wordLang $ ws
+      {-
+      let chkLs = if block==Nothing
+                    then S.fromList . map wordLang $ ws
+                    else S.fromLIst . map wordLang $ ws -- S.fromList . map head . group . map wordLang . concatMap (\(a,b) -> [a,b]) $ bs
+                    -}
+      ss <- BL.readFile scoreFile >>= return . generateLookups chkLs (-999999)
+      let ts = map (\(a,b) -> ( [a,b], alignTwo (BigramScores {gapOpen = gapOpen, gapExtend = gapExtend, bigramDef = bigramDef, unigramDef = -999999, biUniDef = unibiDef, scores = getScores2 ss (wordLang a) (wordLang b)})
+                                                (wordWord a) (wordWord b)
+                              )
+                    ) bs
+      mapM_ (printAlignment (-2)) ts
+    TwoWaySimple{..} -> do
+      simpleScoring <- if null scoreFile then return $ error "scorefile missing"
+                                         else simpleScoreFromFile scoreFile
+      let ws = ws'
+      let bs = blockWith block $ [ (a,b) | (a:as) <- tails ws, b <- if selfAlign then (a:as) else as ]
+      let ts = map (\(a,b) -> ( [a,b], alignTwoSimple simpleScoring (wordWord a) (wordWord b)
+                              )
+                    ) bs
+      mapM_ (printAlignment 0) ts
+    {-
+    ThreeWay{..} -> do
+      let ws = map addWordDelims ws'
+      let bs = blockWith block $ [ (a,b,c) | (a:as) <- tails ws, (b:bs) <- tails as, c <- bs ]
+      let chkLs = S.fromList . map wordLang $ ws
+      {-
+      let chkLs = if block==Nothing
+                    then S.fromList . map wordLang $ ws
+                    --else S.fromList . map head . group . map wordLang . concatMap (\(a,b,c) -> [a,b,c]) $ bs
+                    else S.fromLIst . map wordLang $ ws -- S.fromList . map head . group . map wordLang . concatMap (\(a,b) -> [a,b]) $ bs
+                    -}
+      ss <- BL.readFile scoreFile >>= return . generateLookups chkLs defaultScore
+      let ts = ss `seq` map (\(a,b,c) -> ( [a,b,c], alignThree defaultScore gapOpen (getScores3 ss (wordLang a) (wordLang b) (wordLang c))
+                                                (wordWord a) (wordWord b) (wordWord c)
+                                         )
+                            ) bs
+      mapM_ (printAlignment (-2)) ts
+    ThreeWaySimple{..} -> do
+      [vwl,cns] <- readFile vowelConsonantFile >>= return . map VU.fromList . lines
+      scs <- if null scoreFile then return [3,1,1,0,0,-1] else (readFile scoreFile >>= return . map read . words)
+      let ws = ws'
+      let bs = blockWith block $ [ (a,b,c) | (a:as) <- tails ws, (b:bs) <- tails as, c <- bs ]
+      let ts = map (\(a,b,c) -> ( [a,b,c], alignThreeSimple vwl cns scs gapOpen (wordWord a) (wordWord b) (wordWord c)
+                                )
+                    ) bs
+      mapM_ (printAlignment 0) ts
+    FourWay{..} -> do
+      let ws = map addWordDelims ws'
+      let bs = blockWith block $ [ (a,b,c,d) | (a:as) <- tails ws, (b:bs) <- tails as, (c:cs) <- tails bs, d <- cs ]
+      let chkLs = S.fromList . map wordLang $ ws
+      {-
+      let chkLs = if block==Nothing
+                    then S.fromList . map wordLang $ ws
+                    --else S.fromList . map head . group . map wordLang . concatMap (\(a,b,c,d) -> [a,b,c,d]) $ bs
+                    else S.fromLIst . map wordLang $ ws -- S.fromList . map head . group . map wordLang . concatMap (\(a,b) -> [a,b]) $ bs
+                    -}
+      ss <- BL.readFile scoreFile >>= return . generateLookups chkLs defaultScore
+      let ts = map (\(a,b,c,d) -> ( [a,b,c,d], alignFour defaultScore gapOpen (getScores4 ss (wordLang a) (wordLang b) (wordLang c) (wordLang d))
+                                                (wordWord a) (wordWord b) (wordWord c) (wordWord d)
+                                  )
+                    ) bs
+      mapM_ (printAlignment (-2)) ts
+    FourWaySimple{..} -> do
+      [vwl,cns] <- readFile vowelConsonantFile >>= return . map VU.fromList . lines
+      scs <- if null scoreFile then return [3,1,1,0,0,-1] else (readFile scoreFile >>= return . map read . words)
+      let ws = ws'
+      let bs = blockWith block $ [ (a,b,c,d) | (a:as) <- tails ws, (b:bs) <- tails as, (c:cs) <- tails bs, d <- cs ]
+      let ts = map (\(a,b,c,d) -> ( [a,b,c,d], alignFourSimple vwl cns scs gapOpen (wordWord a) (wordWord b) (wordWord c) (wordWord d)
+                                  )
+                    ) bs
+      mapM_ (printAlignment 0) ts
+      -}
+
+alignTwo :: BigramScores -> V.Vector InternedMultiChar -> V.Vector InternedMultiChar -> (Double, [[String]])
+alignTwo scores x y
+  = second (map alignPretty) -- . filter (any (\c -> c/= "$" && c/= "^")))
+  $ runBigram scores 1 x y
+
+alignTwoSimple
+  :: SimpleScoring
+  -> V.Vector InternedMultiChar
+  -> V.Vector InternedMultiChar
+  -> (Double, [[String]])
+alignTwoSimple simpleScoring x y = second (map alignPretty) $ twoWaySimple simpleScoring x y
+
+{-
+alignThree :: Double -> Double -> (Scores,Scores,Scores) -> V.Vector ByteString -> V.Vector ByteString -> V.Vector ByteString -> (Double, [[String]])
+alignThree sDef sGapOpen scores x y z = second (map (alignPretty . map (filter (\c -> c/= "$" && c/="^")) . tup3List)) $ threeWayBigram sDef sGapOpen scores x y z
+
+alignThreeSimple
+  :: VU.Vector Char
+  -> VU.Vector Char
+  -> [Double]
+  -> Double
+  -> V.Vector ByteString
+  -> V.Vector ByteString
+  -> V.Vector ByteString
+  -> (Double, [[String]])
+alignThreeSimple v c scores sGapOpen x y z = second (map (alignPretty . tup3List)) $ threeWaySimple v c scores sGapOpen x y z
+
+alignFour :: Double -> Double -> (Scores,Scores,Scores,Scores,Scores,Scores) -> V.Vector ByteString -> V.Vector ByteString -> V.Vector ByteString -> V.Vector ByteString -> (Double, [[String]])
+alignFour sDef sGapOpen scores w x y z = second (map (alignPretty . map (filter (\c -> c/= "$" && c/="^")) . tup4List)) $ fourWayBigram sDef sGapOpen scores w x y z
+
+alignFourSimple
+  :: VU.Vector Char
+  -> VU.Vector Char
+  -> [Double]
+  -> Double
+  -> V.Vector ByteString
+  -> V.Vector ByteString
+  -> V.Vector ByteString
+  -> V.Vector ByteString
+  -> (Double, [[String]])
+alignFourSimple v c scores sGapOpen w x y z = second (map (alignPretty . tup4List)) $ fourWaySimple v c scores sGapOpen w x y z
+-}
+
+blockWith Nothing      xs = xs
+blockWith (Just (l,k)) xs = genericTake l . genericDrop (l * (k-1)) $ xs
+
+getScores2 :: Mapping -> Lang -> Lang -> Scores
+getScores2 ss a b
+  | Just z <- M.lookup (a:!:b) (lliid ss) = z
+  | otherwise = trace (printf "Language pair %s %s not found in mapping! Returning empty hashmap\n" (toUtf8String a) (toUtf8String b))
+                (unsafePerformIO H.new)
+
+{-
+getScores3 :: Mapping -> Lang -> Lang -> Lang -> (Scores,Scores,Scores)
+getScores3 ss a b c = (getScores2 ss a b, getScores2 ss a c, getScores2 ss b c)  -- (lliid ss M.! (a:!:b), lliid ss M.! (a:!:c), lliid ss M.! (b:!:c))
+
+getScores4 :: Mapping -> Lang -> Lang -> Lang -> Lang -> (Scores,Scores,Scores,Scores,Scores,Scores)
+getScores4 ss a b c d = (getScores2 ss a b, getScores2 ss a c, getScores2 ss a d, getScores2 ss b c, getScores2 ss b d, getScores2 ss c d)
+-- (lliid ss M.! (a:!:b), lliid ss M.! (a:!:c), lliid ss M.! (a:!:d), lliid ss M.! (b:!:c), lliid ss M.! (b:!:d), lliid ss M.! (c:!:d))
+-}
+
+printAlignment :: Double -> ([Word], (Double, [[String]])) -> IO ()
+printAlignment k (ws,(s,[])) = do
+  printf "DEBUG!\nScore: %f\nDEBUG!\n\n" s
+
+printAlignment k (ws,(s,(x:xs))) = do
+  let ids = concat . intersperse " " . map (show . wordID)   $ ws
+  let wds = concat . intersperse "   WORD   " . map (concat . intersperse " " . map toUtf8String . V.toList . wordWord) $ ws
+  let ns = s / (maximum $ 1 : map ((+k) . fromIntegral . V.length . wordWord) ws)
+  printf "IDS: %s SCORE: %.2f NSCORE: %.2f    WORDS: %s\n" ids s ns wds
+  mapM_ putStrLn x
+  putStrLn ""
+
+
+tup2List (a,b) = [a,b]
+tup3List (a,b,c) = [a,b,c]
+tup4List (a,b,c,d) = [a,b,c,d]
+
+-}
+
diff --git a/tests/properties.hs b/tests/properties.hs
new file mode 100644
--- /dev/null
+++ b/tests/properties.hs
@@ -0,0 +1,11 @@
+
+module Main where
+
+import Test.Framework.Providers.QuickCheck2
+import Test.Framework.TH
+
+
+
+main :: IO ()
+main = $(defaultMainGenerator)
+
