he didn't hit it did he
he do hit it do he
pro:sub mod v pro:per mod pro:sub
he didn't hit it did he ?
h iː WORD_BOUNDARY d ɪ d n t WORD_BOUNDARY h ɪ t WORD_BOUNDARY ɪ t WORD_BOUNDARY d ɪ d WORD_BOUNDARY h iː WORD_BOUNDARY
h e WORD_BOUNDARY d i d n ' t WORD_BOUNDARY h i t WORD_BOUNDARY i t WORD_BOUNDARY d i d WORD_BOUNDARY h e WORD_BOUNDARY