how come you don't know
how come you do know
pro:int v pro:per mod v
how come you don't know .
h aʊ WORD_BOUNDARY k ʌ m WORD_BOUNDARY j uː WORD_BOUNDARY d oʊ n t WORD_BOUNDARY n oʊ WORD_BOUNDARY
h o w WORD_BOUNDARY c o m e WORD_BOUNDARY y o u WORD_BOUNDARY d o n ' t WORD_BOUNDARY k n o w WORD_BOUNDARY