Before revision: Alphabet The Classical Latin alphabet consisted of 21 letters, to which w, y , and z were later added, and the vowel/consonant pairs i and j, u and v, were later separated.
After revision: Alphabet The Pre-Classical Latin alphabet consisted of 21 letters, to which yadded in the Classical epoch, w was and z were later added, and the vowel/consonant pairs i and j, u and v, were later separated.