how come they didn't
how come they do
pro:int v pro:sub mod
how come they didn't .
h aʊ WORD_BOUNDARY k ʌ m WORD_BOUNDARY ð eɪ WORD_BOUNDARY d ɪ d n t WORD_BOUNDARY
h o w WORD_BOUNDARY c o m e WORD_BOUNDARY t h e y WORD_BOUNDARY d i d n ' t WORD_BOUNDARY