I haven't seen it
I have see it
pro:sub aux part pro:per
i haven't seen it .
aɪ WORD_BOUNDARY h æ v ə n t WORD_BOUNDARY s iː n WORD_BOUNDARY ɪ t WORD_BOUNDARY
i WORD_BOUNDARY h a v e n ' t WORD_BOUNDARY s e e n WORD_BOUNDARY i t WORD_BOUNDARY