ara nani katte moratta no
ara nani katte moratta no ?
a r a WORD_BOUNDARY n a n i WORD_BOUNDARY k a t t e WORD_BOUNDARY m o r a t t a WORD_BOUNDARY n o WORD_BOUNDARY
a r a WORD_BOUNDARY n a n i WORD_BOUNDARY k a t t e WORD_BOUNDARY m o r a t t a WORD_BOUNDARY n o WORD_BOUNDARY