I do- I'm not sure
i do- i'm not sure .
aɪ WORD_BOUNDARY d uː WORD_BOUNDARY aɪ m WORD_BOUNDARY n ɑː t WORD_BOUNDARY ʃ ʊ ɹ WORD_BOUNDARY
i WORD_BOUNDARY d o - WORD_BOUNDARY i ' m WORD_BOUNDARY n o t WORD_BOUNDARY s u r e WORD_BOUNDARY