I'm I'm not laughing
I I not laugh
pro:sub pro:sub neg part
i'm i'm not laughing .
aɪ m WORD_BOUNDARY aɪ m WORD_BOUNDARY n ɑː t WORD_BOUNDARY l æ f ɪ ŋ WORD_BOUNDARY
i ' m WORD_BOUNDARY i ' m WORD_BOUNDARY n o t WORD_BOUNDARY l a u g h i n g WORD_BOUNDARY