we don't need lions
we do need lion
pro:sub mod v n
we don't need lions .
w iː WORD_BOUNDARY d oʊ n t WORD_BOUNDARY n iː d WORD_BOUNDARY l aɪ ə n z WORD_BOUNDARY
w e WORD_BOUNDARY d o n ' t WORD_BOUNDARY n e e d WORD_BOUNDARY l i o n s WORD_BOUNDARY