did they fall down
do they fall down
mod pro:sub v adv
did they fall down?
d ɪ d WORD_BOUNDARY ð eɪ WORD_BOUNDARY f ɔː l WORD_BOUNDARY d aʊ n WORD_BOUNDARY
d i d WORD_BOUNDARY t h e y WORD_BOUNDARY f a l l WORD_BOUNDARY d o w n ? WORD_BOUNDARY