C1311213331333132332133313331333133313331333131333133313112211213311   >>    C131121333133313233213331333133313331333133313133313331311221121331   <<    C1311213331333132332133313331333133313331333131333133313112211213313   >>      C1311213331333132332133313331333133313331333131333133313112211213312   >>