m I don't care
I do care
pro:sub mod v
m i don't care.
ɛ m WORD_BOUNDARY aɪ WORD_BOUNDARY d oʊ n t WORD_BOUNDARY k ɛ ɹ WORD_BOUNDARY
m WORD_BOUNDARY i WORD_BOUNDARY d o n ' t WORD_BOUNDARY c a r e . WORD_BOUNDARY