I've not seen this
I not see this
pro:sub neg part pro:dem
i've not seen this .
aɪ v WORD_BOUNDARY n ɑː t WORD_BOUNDARY s iː n WORD_BOUNDARY ð ɪ s WORD_BOUNDARY
i ' v e WORD_BOUNDARY n o t WORD_BOUNDARY s e e n WORD_BOUNDARY t h i s WORD_BOUNDARY