hako no naka ni nai
hako no naka ni nai ?
h a k o WORD_BOUNDARY n o WORD_BOUNDARY n a k a WORD_BOUNDARY n i WORD_BOUNDARY n a i WORD_BOUNDARY
h a k o WORD_BOUNDARY n o WORD_BOUNDARY n a k a WORD_BOUNDARY n i WORD_BOUNDARY n a i WORD_BOUNDARY