A minor deviation is that intonations count as lexemes: when speaking of words, or of minimum free forms, intonations have to be taken into account separately.
- Hockett (1958), a pag.171

Consider the following dialog: JACK: Where’re you going? BILL: Home. JACK: Home? BILL: Yes. The second and third lines of this dialog are not identical to the ear, and certainly not the same in meaning. Yet the constituent vowels and consonants of the two are the same: /howm/. The difference in sound which keeps them apart lies in the changing pitch of the voice. Distinctively different features of English speech melody constitute ‘intonation’.
- Hockett (1958), a pag.33