I don't know anything
I do know anything
pro:sub mod v pro:indef
i don't know anything .
aɪ WORD_BOUNDARY d oʊ n t WORD_BOUNDARY n oʊ WORD_BOUNDARY ɛ n ɪ θ ɪ ŋ WORD_BOUNDARY
i WORD_BOUNDARY d o n ' t WORD_BOUNDARY k n o w WORD_BOUNDARY a n y t h i n g WORD_BOUNDARY