na na na na ne ne
na na na na ne ne .
n a WORD_BOUNDARY n a WORD_BOUNDARY n a WORD_BOUNDARY n a WORD_BOUNDARY n ɛ WORD_BOUNDARY n ɛ WORD_BOUNDARY
n a WORD_BOUNDARY n a WORD_BOUNDARY n a WORD_BOUNDARY n a WORD_BOUNDARY n e WORD_BOUNDARY n e WORD_BOUNDARY