ara kono naka haitta zo
ara kono naka haitta zo .
a r a WORD_BOUNDARY k o n o WORD_BOUNDARY n a k a WORD_BOUNDARY h a i t t a WORD_BOUNDARY z o WORD_BOUNDARY
a r a WORD_BOUNDARY k o n o WORD_BOUNDARY n a k a WORD_BOUNDARY h a i t t a WORD_BOUNDARY z o WORD_BOUNDARY