na na na na na
na na na na na .
n ɑː WORD_BOUNDARY n ɑː WORD_BOUNDARY n ɑː WORD_BOUNDARY n ɑː WORD_BOUNDARY n ɑː WORD_BOUNDARY
n a WORD_BOUNDARY n a WORD_BOUNDARY n a WORD_BOUNDARY n a WORD_BOUNDARY n a WORD_BOUNDARY