he useta be your best friend
he used be your good friend
pro:sub mod cop det:poss adj n
he useta be your best friend .
h iː WORD_BOUNDARY j uː z ɛ ɾ ə WORD_BOUNDARY b iː WORD_BOUNDARY j ʊ ɹ WORD_BOUNDARY b ɛ s t WORD_BOUNDARY f ɹ ɛ n d WORD_BOUNDARY
h e WORD_BOUNDARY u s e t a WORD_BOUNDARY b e WORD_BOUNDARY y o u r WORD_BOUNDARY b e s t WORD_BOUNDARY f r i e n d WORD_BOUNDARY