diff --git a/CHANGELOG.md b/CHANGELOG.md
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+++ b/CHANGELOG.md
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+# Revision history for phladiprelio-tests
+
+## 0.1.0.0 -- 2023-08-14
+
+* First version. Released on an unsuspecting world.
+
diff --git a/LICENSE b/LICENSE
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--- /dev/null
+++ b/LICENSE
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+Copyright (c) 2023 Oleksandr Zhabenko
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/Phladiprelio/Tests.hs b/Phladiprelio/Tests.hs
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+++ b/Phladiprelio/Tests.hs
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+{-# LANGUAGE NoImplicitPrelude #-}
+
+module Phladiprelio.Tests where
+
+import GHC.Base
+import GHC.Int (Int8)
+import GHC.Enum (toEnum)
+import GHC.Real (quot,rem)
+import GHC.Num ((+),(-),(*))
+import GHC.List (elem)
+
+sel :: Int -> [[Int8]]
+sel x 
+   | x == 1 || x < 0 || x > 179 = []
+   | x == 0 || x == 4 = [[1],[2,1],[3,2],[4,3,2],[5,4,3],[6,5,4,3,2]]  -- all cases are present: 2, 3, 4, 5, 6, 7. Therefore, the slowest ones.
+   | x == 2 || x == 5 = [[1],[2],[3],[4,3],[5,4],[6,5,4]]
+   | x == 7 = [[0],[1,0],[1,0],[1,0],[1,0],[1,0]]
+   | x == 8 = [[0],[1,0],[1,0],[2,1,0],[2,1,0],[2,1,0]]
+   | x == 9 = [[0],[1,0],[1,0],[2,1,0],[3,2,1,0],[3,2,1,0]]
+------------------------------------------------------------------
+   | x >= 20 && x <= 26 && x /= 21 = [[1]]  -- at least 7 is omitted, but probably 6, or even 5, or even 4, or even 3. 2 is however present.
+   | x >= 27 && x <= 29 = [[0]]
+   | x == 30 || x == 34 = [[1],[2,1]]
+   | x == 32 || x == 35 = [[1],[2]]
+   | x >= 37 && x <= 39 = [[0],[1,0]]
+   | x == 40 || x == 44 = [[1],[2,1],[3,2]]
+   | x == 42 || x == 45 = [[1],[2],[3]]
+   | x >= 47 && x <= 49 = [[0],[1,0],[1,0]]
+   | x == 50 || x == 54 = [[1],[2,1],[3,2],[4,3,2]]
+   | x == 52 || x == 55 = [[1],[2],[3],[4,3]]
+   | x == 57 = [[0],[1,0],[1,0],[1,0]]
+   | x == 58 || x == 59 = [[0],[1,0],[1,0],[2,1,0]]
+   | x == 60 || x == 64 = [[1],[2,1],[3,2],[4,3,2],[5,4,3]]
+   | x == 62 || x == 65 = [[1],[2],[3],[4,3],[5,4]]
+   | x == 67 = [[0],[1,0],[1,0],[1,0],[1,0]]
+   | x == 68 = [[0],[1,0],[1,0],[2,1,0],[2,1,0]]
+   | x == 69 = [[0],[1,0],[1,0],[2,1,0],[3,2,1,0]]
+------------------------------------------------------
+   | x == 70 || x == 74 = [[2,1],[3,2],[4,3,2],[5,4,3],[6,5,4,3,2]]  -- at least 2 is omitted, but probably 3 and even 4. 5, 6 and 7 are present.
+   | x == 72 || x == 75 = [[2],[3],[4,3],[5,4],[6,5,4]]
+   | x == 77 = [[1,0],[1,0],[1,0],[1,0],[1,0]]
+   | x == 78 = [[1,0],[1,0],[2,1,0],[2,1,0],[2,1,0]]
+   | x == 79 = [[1,0],[1,0],[2,1,0],[3,2,1,0],[3,2,1,0]]
+   | x == 80 || x == 84 = [[3,2],[4,3,2],[5,4,3],[6,5,4,3,2]]
+   | x == 82 || x == 85 = [[3],[4,3],[5,4],[6,5,4]]
+   | x == 87 = [[1,0],[1,0],[1,0],[1,0]]
+   | x == 88 = [[1,0],[2,1,0],[2,1,0],[2,1,0]]
+   | x == 89 = [[1,0],[2,1,0],[3,2,1,0],[3,2,1,0]]
+   | x == 90 || x == 94 = [[4,3,2],[5,4,3],[6,5,4,3,2]]
+   | x == 92 || x == 95 = [[4,3],[5,4],[6,5,4]]
+   | x == 97 = [[1,0],[1,0],[1,0]]
+   | x == 98 = [[2,1,0],[2,1,0],[2,1,0]]
+   | x == 99 = [[2,1,0],[3,2,1,0],[3,2,1,0]]
+------------------------------------------------------------------------
+   | x == 100 || x == 104 = [[1],[2,1],[4,3,2],[6,5,4,3,2]]  -- 4 and 6 are omitted, just present the ones from: 2, 3, 5, 7.
+   | x == 102 || x == 105 = [[1],[2],[4,3],[6,5,4]]
+   | x == 107 = [[0],[1,0],[1,0],[1,0]]
+   | x == 108 = [[0],[1,0],[2,1,0],[2,1,0]]
+   | x == 109 = [[0],[1,0],[2,1,0],[3,2,1,0]]
+------------------------------------------------------------------
+   | x == 150 || x == 154 = [[1],[2,1],[4,3,2]]  -- 4, 6, 7 are omitted but 2, 3, 5 are present.
+   | x == 152 || x == 155 = [[1],[2],[4,3]]
+   | x == 157 = [[0],[1,0],[1,0]]
+   | x == 158 || x == 159 = [[0],[1,0],[2,1,0]]
+------------------------------------------------------
+   | x == 170 || x == 174 = [[2,1],[4,3,2],[6,5,4,3,2]]  -- just 3, 5 and 7 are present
+   | x == 172 || x == 175 = [[2],[4,3],[6,5,4]]
+   | x == 177 = [[1,0],[1,0],[1,0]]
+   | x == 178 = [[1,0],[2,1,0],[2,1,0]]
+   | x == 179 = [[1,0],[2,1,0],[3,2,1,0]]
+----------------------------------------------------------------------- 
+   | otherwise = [[1],[1],[2,1],[3,2,1],[3,2],[4,3,2]]
+--------------------------------------------------------------------------------------------
+--------------------------------------------------------------------------------------------
+
+sel2 :: Int -> [Int8]
+sel2 y 
+   | y == 1 || y < 0 || y > 179 = []
+   | (rem y 10 `elem` [1,3,6]) || y >= 0 && y <= 9 = [2..7]
+   | y >= 20 && y <= 69 = [2..toEnum (y `quot` 10)]
+   | y >= 70 && y <= 99 = [toEnum (y `quot` 10) - 4..7]
+   | y >= 100 && y <= 109 = [2,3,5,7]
+   | y >= 150 && y <= 159 = [2,3,5]
+   | y >= 170 && y <= 179 = [3,5,7]
+   | otherwise = [2..7]
+
+minMax11ByCList :: Ord a => (a -> a -> Ordering) -> [a] -> (a, a) -- Is rewritten from the 'Data.MinMax.Preconditions.minMax11ByC' from @subG@ package.
+minMax11ByCList g xs@(x:y:ys) = foldr f (if x > y then (y, x) else (x, y)) ys
+    where f z (x,y)
+             | g z x == LT = (z,y)
+             | g z y == GT = (x,z)
+             | otherwise = (x,y)
+minMax11ByCList _ _ = undefined -- Is not intended to be used for lists with less than two elements.
+
+
diff --git a/phladiprelio-tests.cabal b/phladiprelio-tests.cabal
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--- /dev/null
+++ b/phladiprelio-tests.cabal
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+cabal-version:      1.24
+-- The cabal-version field refers to the version of the .cabal specification,
+-- and can be different from the cabal-install (the tool) version and the
+-- Cabal (the library) version you are using. As such, the Cabal (the library)
+-- version used must be equal or greater than the version stated in this field.
+-- Starting from the specification version 2.2, the cabal-version field must be
+-- the first thing in the cabal file.
+
+-- Initial package description 'phladiprelio-tests' generated by
+-- 'cabal init'. For further documentation, see:
+--   http://haskell.org/cabal/users-guide/
+--
+-- The name of the package.
+name:               phladiprelio-tests
+
+-- The package version.
+-- See the Haskell package versioning policy (PVP) for standards
+-- guiding when and how versions should be incremented.
+-- https://pvp.haskell.org
+-- PVP summary:     +-+------- breaking API changes
+--                  | | +----- non-breaking API additions
+--                  | | | +--- code changes with no API change
+version:            0.1.0.0
+
+-- A short (one-line) description of the package.
+synopsis:           Common for Ukrainian and general data for test mode.
+
+-- A longer description of the package.
+-- description:
+
+-- URL for the project homepage or repository.
+homepage:           https://hackage.haskell.org/package/phladiprelio-tests
+
+-- The license under which the package is released.
+license:            MIT
+
+-- The file containing the license text.
+license-file:       LICENSE
+
+-- The package author(s).
+author:             Oleksandr Zhabenko
+
+-- An email address to which users can send suggestions, bug reports, and patches.
+maintainer:         oleksandr.zhabenko@yahoo.com
+
+-- A copyright notice.
+copyright:          Oleksandr Zhabenko, 2023
+category:           Language
+build-type:         Simple
+
+-- Extra doc files to be distributed with the package, such as a CHANGELOG or a README.
+extra-doc-files:    CHANGELOG.md
+
+-- Extra source files to be distributed with the package, such as examples, or a tutorial module.
+-- extra-source-files:
+
+library
+    -- Modules exported by the library.
+    exposed-modules:  Phladiprelio.Tests
+
+    -- Modules included in this library but not exported.
+    -- other-modules:
+
+    -- LANGUAGE extensions used by modules in this package.
+    other-extensions: NoImplicitPrelude
+
+    -- Other library packages from which modules are imported.
+    build-depends:    base >=4.13 && <5
+
+    -- Directories containing source files.
+    hs-source-dirs:   .
+
+    -- Base language which the package is written in.
+    default-language: Haskell2010