I don't know let's see
I do know let see
pro:sub mod v v v
i don't know let's see .
aɪ WORD_BOUNDARY d oʊ n t WORD_BOUNDARY n oʊ WORD_BOUNDARY l ɛ t s WORD_BOUNDARY s iː WORD_BOUNDARY
i WORD_BOUNDARY d o n ' t WORD_BOUNDARY k n o w WORD_BOUNDARY l e t ' s WORD_BOUNDARY s e e WORD_BOUNDARY