I don't know which
I do know which
pro:sub mod v pro:int
i don't know which .
aɪ WORD_BOUNDARY d oʊ n t WORD_BOUNDARY n oʊ WORD_BOUNDARY w ɪ t̠ʃ WORD_BOUNDARY
i WORD_BOUNDARY d o n ' t WORD_BOUNDARY k n o w WORD_BOUNDARY w h i c h WORD_BOUNDARY