where did he fly
where do he fly
pro:int mod pro:sub v
where did he fly ?
w ɛ ɹ WORD_BOUNDARY d ɪ d WORD_BOUNDARY h iː WORD_BOUNDARY f l aɪ WORD_BOUNDARY
w h e r e WORD_BOUNDARY d i d WORD_BOUNDARY h e WORD_BOUNDARY f l y WORD_BOUNDARY