diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -79,6 +79,11 @@
 
 * Thirteenth version. Fixed issues with being not compiled. 
 
-## 0.13.0.0 -- 2020-08-16
+## 0.14.0.0 -- 2020-08-16
 
 * Fourteenth version. Fixed issues with being not compiled. 
+
+## 0.15.0.0 -- 2020-08-18
+
+* Fifteenth version. Added new functions uniqueness2nG and uniquenessPeriodsN to the DobutokO.Poetry.UniquenessPeriodsG module. Some documentation improvements for the 
+module. Changed the dependency boundaries for uniqueness-periods.
diff --git a/DobutokO/Poetry/UniquenessPeriodsG.hs b/DobutokO/Poetry/UniquenessPeriodsG.hs
--- a/DobutokO/Poetry/UniquenessPeriodsG.hs
+++ b/DobutokO/Poetry/UniquenessPeriodsG.hs
@@ -45,12 +45,28 @@
     let ys = f xs
         y2s = mconcat . g $ ys in (ys,y2s)
 
--- | Being given two functions as parameters uses them to create a longer list of 'Int' then application of only one of them. Besides, it can take into 
--- account the possible 0 and to create a non-negative list of 'Int' that can be used e. g. by 'DobutokO.Norms.splitNorm'.
+-- | Being given two functions as parameters uses them to create a longer list of 'Int' than just application of only one of them. Besides, it can take into 
+-- account the possible 0 and to create a non-negative list of 'Int' that can be used e. g. by 'DobutokO.Poetry.Norms.splitNorm'.
 uniqueness2n :: ([String] -> [Int]) -> ([String] -> Int) -> Int -> ([[String]], [String]) -> [Int]
 uniqueness2n h f2 x (ys,y2s) 
  | x == 0 = fmap f2 ys ++ (0:h y2s)
  | otherwise = fmap f2 ys ++ h y2s
+
+-- | Approximates the higher order computational scheme of the 'uniqueness2n' function considering the latter one as the second order computational scheme. Because 
+-- of the possible concatenation and other not phonetic coversions it cannot be considered the exact one, but in some cases can give more information about phonetic 
+-- \"uniqueness periods\" structure, so is provided here for exploration.
+uniqueness2nG :: Int -> ([String] -> [Int]) -> ([String] -> Int) -> Int -> ([[String]], [String]) -> [Int] 
+uniqueness2nG n h f2 x (ys,y2s)
+ | compare n 2 == LT = error "DobutokO.Poetry.UniquenessPeriodsG.uniqueness2nG: undefined for that third argument. "
+ | n == 2 = uniqueness2n h f2 x (ys,y2s)
+ | x == 0 = fmap f2 ys ++ (0:(uniqueness2nG (n - 1) h f2 0 . uniqueness2 (show7s6) (uniquenessP2) . mconcat $ y2s))
+ | otherwise = fmap f2 ys ++ (uniqueness2nG (n - 1) h f2 x . uniqueness2 (show7s6) (uniquenessP2) . mconcat $ y2s)
+
+-- | Approximates the higher order computational scheme of the 'uniquenessPeriods2' function considering the latter one as the second order computational 
+-- scheme. Because of the possible concatenation and other not phonetic coversions it cannot be considered the exact one, but in some cases can give more 
+-- information about phonetic \"uniqueness periods\" structure, so is provided here for exploration.
+uniquenessPeriodsN :: Int -> Int -> String -> [Int]
+uniquenessPeriodsN n x = uniqueness2nG n (show7snc) (length) x . uniqueness2 (show7s6) (uniquenessP2) 
 
 -- | Filters a given arguments so that each element 'String' in the result is filtered from the element, which is doubled the first in the next 'String' 
 -- (usually, it equals to the head of it, if used as expected). Can be interpreted as a preparation to the second application of the 'uniquenessPeriods' 
diff --git a/dobutokO-poetry.cabal b/dobutokO-poetry.cabal
--- a/dobutokO-poetry.cabal
+++ b/dobutokO-poetry.cabal
@@ -2,7 +2,7 @@
 -- documentation, see http://haskell.org/cabal/users-guide/
 
 name:                dobutokO-poetry
-version:             0.14.0.0
+version:             0.15.0.0
 synopsis:            Helps to order the 7 or less Ukrainian words to obtain somewhat suitable for poetry or music text
 description:         Helps to order the 7 or less Ukrainian words (or their concatenations) to obtain somewhat suitable for poetry or music text. Can be also used as a research instrument with generalized functions.
 
@@ -21,7 +21,7 @@
   exposed-modules:     DobutokO.Poetry.UniquenessPeriodsG, Main, DobutokO.Poetry.General, DobutokO.Poetry.General.Debug
   -- other-modules:
   other-extensions:    CPP
-  build-depends:       base >=4.7 && <4.15, vector >=0.11 && <0.14, mmsyn3 >=0.1.5 && <1, mmsyn7s >=0.8 && <1, mmsyn6ukr >=0.8 && <1, uniqueness-periods >=0.1 && <1, dobutokO-poetry-general >=0.1 && <1
+  build-depends:       base >=4.7 && <4.15, vector >=0.11 && <0.14, mmsyn3 >=0.1.5 && <1, mmsyn7s >=0.8 && <1, mmsyn6ukr >=0.8 && <1, uniqueness-periods >=0.2 && <1, dobutokO-poetry-general >=0.1 && <1
   -- hs-source-dirs:
   default-language:    Haskell2010