C111112111133131121133133313331333133313331323321111331313233311   >>    C11111211113313112113313331333133313331333132332111133131323331   <<    C111112111133131121133133313331333133313331323321111331313233313   >>      C111112111133131121133133313331333133313331323321111331313233312   >>