C1311213331333132332133313331333133313331311331333133313112121133121   >>    C131121333133313233213331333133313331333131133133313331311212113312   <<    C1311213331333132332133313331333133313331311331333133313112121133123   >>      C1311213331333132332133313331333133313331311331333133313112121133122   >>