C11112331312111112111133133313331333133313223223313121111331323113111   >>    C1111233131211111211113313331333133313331322322331312111133132311311   <<    C11112331312111112111133133313331333133313223223313121111331323113113   >>      C11112331312111112111133133313331333133313223223313121111331323113112   >>