when did what time did they come
when what time do they come
conj pro:int n mod pro:sub v
when did what time did they come?
w ɛ n WORD_BOUNDARY d ɪ d WORD_BOUNDARY w ʌ t WORD_BOUNDARY t aɪ m WORD_BOUNDARY d ɪ d WORD_BOUNDARY ð eɪ WORD_BOUNDARY k ʌ m WORD_BOUNDARY
w h e n WORD_BOUNDARY d i d WORD_BOUNDARY w h a t WORD_BOUNDARY t i m e WORD_BOUNDARY d i d WORD_BOUNDARY t h e y WORD_BOUNDARY c o m e ? WORD_BOUNDARY