Create 11-Plurals.java

        // TODO: Complete this method
        // If the word ends in y preceded by a consonant you take away the y and add ies.
        // If the word ends in y preceded by a vowel, you just add an s.
        // You add an es when a word ends in o, or s, or sh, or ch.
        // In all the other case just add an s.
        // you can use the
        //  isVowel
        //  isConsonant
        //  is
        // methods from below.