kon nan mae kara atta ka
kon nan mae kara atta ka ?
k o n WORD_BOUNDARY n a n WORD_BOUNDARY m a e WORD_BOUNDARY k a r a WORD_BOUNDARY a t t a WORD_BOUNDARY k a WORD_BOUNDARY
k o n WORD_BOUNDARY n a n WORD_BOUNDARY m a e WORD_BOUNDARY k a r a WORD_BOUNDARY a t t a WORD_BOUNDARY k a WORD_BOUNDARY