when did when did you hear them
when do you hear them
conj mod pro:per v pro:obj
when did when did you hear them ?
w ɛ n WORD_BOUNDARY d ɪ d WORD_BOUNDARY w ɛ n WORD_BOUNDARY d ɪ d WORD_BOUNDARY j uː WORD_BOUNDARY h ɪ ɹ WORD_BOUNDARY ð ɛ m WORD_BOUNDARY
w h e n WORD_BOUNDARY d i d WORD_BOUNDARY w h e n WORD_BOUNDARY d i d WORD_BOUNDARY y o u WORD_BOUNDARY h e a r WORD_BOUNDARY t h e m WORD_BOUNDARY