he doesn't know how
he do know how
pro:sub mod v pro:rel
he doesn't know how .
h iː WORD_BOUNDARY d ʌ z ə n t WORD_BOUNDARY n oʊ WORD_BOUNDARY h aʊ WORD_BOUNDARY
h e WORD_BOUNDARY d o e s n ' t WORD_BOUNDARY k n o w WORD_BOUNDARY h o w WORD_BOUNDARY