code: public Alphabet getAlphabetForChar(final char theChar) {
          Alphabet result = null;
          for (final Alphabet alphabet : this.alphabets) {
              if (alphabet.isContain(theChar)) {
                  result = alphabet;
                  break;
              }
          }
          return result;
      }
docs: Searches alphabets for a char
  @return first founded alphabet that contains given char
  or <code>null</code> if no alphabets contains given char.