nan ka haitten no ka
nan ka haitten no ka ?
n a n WORD_BOUNDARY k a WORD_BOUNDARY h a i t t e n WORD_BOUNDARY n o WORD_BOUNDARY k a WORD_BOUNDARY
n a n WORD_BOUNDARY k a WORD_BOUNDARY h a i t t e n WORD_BOUNDARY n o WORD_BOUNDARY k a WORD_BOUNDARY