I didn't hear you sing
I do hear you sing
pro:sub mod v pro:per v
i didn't hear you sing .
aɪ WORD_BOUNDARY d ɪ d n t WORD_BOUNDARY h ɪ ɹ WORD_BOUNDARY j uː WORD_BOUNDARY s ɪ ŋ WORD_BOUNDARY
i WORD_BOUNDARY d i d n ' t WORD_BOUNDARY h e a r WORD_BOUNDARY y o u WORD_BOUNDARY s i n g WORD_BOUNDARY