we don't need tools
we do need tool
pro:sub mod v n
we don't need tools .
w iː WORD_BOUNDARY d oʊ n t WORD_BOUNDARY n iː d WORD_BOUNDARY t uː l z WORD_BOUNDARY
w e WORD_BOUNDARY d o n ' t WORD_BOUNDARY n e e d WORD_BOUNDARY t o o l s WORD_BOUNDARY