what happened to it
what happen to it
pro:int v prep pro:per
what happened to it ?
w ʌ t WORD_BOUNDARY h æ p ə n d WORD_BOUNDARY t ʊ WORD_BOUNDARY ɪ t WORD_BOUNDARY
w h a t WORD_BOUNDARY h a p p e n e d WORD_BOUNDARY t o WORD_BOUNDARY i t WORD_BOUNDARY