I'm building I'm building something
I build something
pro:sub part pro:indef
i'm building i'm building something .
aɪ m WORD_BOUNDARY b ɪ l d ɪ ŋ WORD_BOUNDARY aɪ m WORD_BOUNDARY b ɪ l d ɪ ŋ WORD_BOUNDARY s ʌ m θ ɪ ŋ WORD_BOUNDARY
i ' m WORD_BOUNDARY b u i l d i n g WORD_BOUNDARY i ' m WORD_BOUNDARY b u i l d i n g WORD_BOUNDARY s o m e t h i n g WORD_BOUNDARY