but I'm not I am not
but I be not
conj pro:sub cop neg
but i'm not i am not .
b ʌ t WORD_BOUNDARY aɪ m WORD_BOUNDARY n ɑː t WORD_BOUNDARY aɪ WORD_BOUNDARY æ m WORD_BOUNDARY n ɑː t WORD_BOUNDARY
b u t WORD_BOUNDARY i ' m WORD_BOUNDARY n o t WORD_BOUNDARY i WORD_BOUNDARY a m WORD_BOUNDARY n o t WORD_BOUNDARY