what did they eat
what do they eat
pro:int mod pro:sub v
what did they eat ?
w ʌ t WORD_BOUNDARY d ɪ d WORD_BOUNDARY ð eɪ WORD_BOUNDARY iː t WORD_BOUNDARY
w h a t WORD_BOUNDARY d i d WORD_BOUNDARY t h e y WORD_BOUNDARY e a t WORD_BOUNDARY