but I don't know
but I do know
conj pro:sub mod v
but i don't know.
b ʌ t WORD_BOUNDARY aɪ WORD_BOUNDARY d oʊ n t WORD_BOUNDARY n oʊ WORD_BOUNDARY
b u t WORD_BOUNDARY i WORD_BOUNDARY d o n ' t WORD_BOUNDARY k n o w . WORD_BOUNDARY