C11112331312111112111133133313331333133313223223313121111111112311   >>    C1111233131211111211113313331333133313331322322331312111111111231   <<    C11112331312111112111133133313331333133313223223313121111111112313   >>      C11112331312111112111133133313331333133313223223313121111111112312   >>