C11112331312111112111133133313331333133313223223313121111113223231   >>    C1111233131211111211113313331333133313331322322331312111111322323   <<    C11112331312111112111133133313331333133313223223313121111113223233   >>      C11112331312111112111133133313331333133313223223313121111113223232   >>