diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,3 +4,7 @@
 
 * First version. Released on an unsuspecting world. The function mapI is taken from the mmsyn5 package. This inspired some more general functionality.
 
+## 0.1.1.0 -- 2024-01-06
+
+* First version revised A. Added two new functions.
+
diff --git a/Data/IntermediateStructures1.hs b/Data/IntermediateStructures1.hs
--- a/Data/IntermediateStructures1.hs
+++ b/Data/IntermediateStructures1.hs
@@ -8,7 +8,7 @@
 --
 -- The function 'mapI' is taken from the [mmsyn5](https://hackage.haskell.org/package/mmsyn5) package. This inspired some more general functionality.
 
-{-# LANGUAGE NoImplicitPrelude #-}
+{-# LANGUAGE NoImplicitPrelude, BangPatterns #-}
 {-# OPTIONS_HADDOCK -show-extensions #-}
 
 
@@ -19,7 +19,9 @@
        , map2I
     -- * Generalized construction functions for some other ones (generative functions)
        , inter
+       , inter'
        , swapinter
+       , swapinter'
   )
 where
 
@@ -46,4 +48,14 @@
 swapinter :: (a -> c) -> (a -> b) -> (a -> b -> c -> d) -> a -> d
 swapinter fc fb f3d x = f3d x (fb x) (fc x)
 {-# INLINE swapinter #-}
+
+-- | A variant of 'inter' with \'stricter\' calculation scheme. Can be in many cases more efficient.
+inter' :: (a -> b) -> (a -> c) -> (a -> b -> c -> d) -> a -> d
+inter' fb fc f3d !x = f3d x (fb x) (fc x) 
+{-# INLINE inter' #-}
+
+-- | A variant of the 'swapinter' with \'stricter\' calculation scheme. Can be in many cases more efficient.
+swapinter' :: (a -> c) -> (a -> b) -> (a -> b -> c -> d) -> a -> d
+swapinter' fc fb f3d !x = f3d x (fb x) (fc x)
+{-# INLINE swapinter' #-}
 
diff --git a/README.md b/README.md
--- a/README.md
+++ b/README.md
@@ -7,6 +7,8 @@
 
 On the 05/01/2024 Emma starts a world tour with [André Rieu and Johann Strauss Orchestra](https://www.andrerieu.com).
 
+On the 06/01/2024 there are a feast of Epiphany, and Sophie's Kok, a sister of Emma, 19th Birthday (she is 18). Therefore, the version 0.1.1.0 is devoted also to her.
+
 Besides, you can support Ukraine and Ukrainian people. 
 
 All support is welcome, including donations for the needs of the Ukrainian army, IDPs and refugees.
diff --git a/intermediate-structures.cabal b/intermediate-structures.cabal
--- a/intermediate-structures.cabal
+++ b/intermediate-structures.cabal
@@ -1,6 +1,6 @@
 cabal-version:      3.0
 name:               intermediate-structures
-version:            0.1.0.0
+version:            0.1.1.0
 synopsis:
     Some simple functions to deal with transformations from structures to other ones, basically lists.
 
@@ -25,7 +25,7 @@
     import:           warnings
     exposed-modules:  Data.IntermediateStructures1
     -- other-modules:
-    other-extensions: NoImplicitPrelude
+    other-extensions: NoImplicitPrelude, BangPatterns
     build-depends:    base >=4.13 && <5
     hs-source-dirs:   .
     default-language: Haskell2010