he's said it once
he say it once
pro:sub part pro:per adv
he's said it once.
h iː z WORD_BOUNDARY s ɛ d WORD_BOUNDARY ɪ t WORD_BOUNDARY w ʌ n s WORD_BOUNDARY
h e ' s WORD_BOUNDARY s a i d WORD_BOUNDARY i t WORD_BOUNDARY o n c e . WORD_BOUNDARY