what's happened to the train
what happen to the train
pro:int part prep det:art n
what's happened to the train ?
w ɒ t s WORD_BOUNDARY h a p ə n d WORD_BOUNDARY t ə WORD_BOUNDARY ð ə WORD_BOUNDARY t ɹ eɪ n WORD_BOUNDARY
w h a t ' s WORD_BOUNDARY h a p p e n e d WORD_BOUNDARY t o WORD_BOUNDARY t h e WORD_BOUNDARY t r a i n WORD_BOUNDARY