nan tte ittara ii no
nan tte ittara ii no ?
n a n WORD_BOUNDARY t t e WORD_BOUNDARY i t t a r a WORD_BOUNDARY i i WORD_BOUNDARY n o WORD_BOUNDARY
n a n WORD_BOUNDARY t t e WORD_BOUNDARY i t t a r a WORD_BOUNDARY i i WORD_BOUNDARY n o WORD_BOUNDARY