I didn't bring it
I do bring it
pro:sub mod v pro:per
i didn't bring it.
aɪ WORD_BOUNDARY d ɪ d n tʰ WORD_BOUNDARY b ɹ ɪ ŋ WORD_BOUNDARY ɪ tʰ WORD_BOUNDARY
i WORD_BOUNDARY d i d n ' t WORD_BOUNDARY b r i n g WORD_BOUNDARY i t . WORD_BOUNDARY