C11112331312111112111133133313331333133313223223313121111133313113313331213311   >>    C1111233131211111211113313331333133313331322322331312111113331311331333121331   <<    C11112331312111112111133133313331333133313223223313121111133313113313331213313   >>      C11112331312111112111133133313331333133313223223313121111133313113313331213312   >>