C1311213331333132332133313331333133313331333133313331333133112123311   >>    C131121333133313233213331333133313331333133313331333133313311212331   <<    C1311213331333132332133313331333133313331333133313331333133112123313   >>      C1311213331333132332133313331333133313331333133313331333133112123312   >>