but didn't fall down
but do fall down
conj mod v adv
but didn't fall down .
b ʌ t WORD_BOUNDARY d ɪ d n t WORD_BOUNDARY f ɔː l WORD_BOUNDARY d aʊ n WORD_BOUNDARY
b u t WORD_BOUNDARY d i d n ' t WORD_BOUNDARY f a l l WORD_BOUNDARY d o w n WORD_BOUNDARY