I'm not promising
I not promise
pro:sub neg part
i'm not promising .
aɪ m WORD_BOUNDARY n ɑː t WORD_BOUNDARY p ɹ ɑː m ɪ s ɪ ŋ WORD_BOUNDARY
i ' m WORD_BOUNDARY n o t WORD_BOUNDARY p r o m i s i n g WORD_BOUNDARY