ara pikapika ni natta ka
ara pikapika ni natta ka ?
a r a WORD_BOUNDARY p i k a p i k a WORD_BOUNDARY n i WORD_BOUNDARY n a t t a WORD_BOUNDARY k a WORD_BOUNDARY
a r a WORD_BOUNDARY p i k a p i k a WORD_BOUNDARY n i WORD_BOUNDARY n a t t a WORD_BOUNDARY k a WORD_BOUNDARY