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- TextLogic:
* sortWordsAlphabeticallyBySecondLetter();
* getWordsBeginningWith();
* calculateLetterPerWord();
* sortByLetterPerWord();
* countWordsUsages();

- Word:
* iterator();

- Word.WordIterator:
* hasNextVowel();
* nextVowel();
* hasNextConsonant();
* nextConsonant();