I don't know though
I do know though
pro:sub mod v adv
i don't know though.
aɪ WORD_BOUNDARY d oʊ n t WORD_BOUNDARY n oʊ WORD_BOUNDARY ð oʊ WORD_BOUNDARY
i WORD_BOUNDARY d o n ' t WORD_BOUNDARY k n o w WORD_BOUNDARY t h o u g h . WORD_BOUNDARY