C1311213331333132332133313331333133313331333133313331333133313331312133312121   >>    C131121333133313233213331333133313331333133313331333133313331333131213331212   <<    C1311213331333132332133313331333133313331333133313331333133313331312133312123   >>      C1311213331333132332133313331333133313331333133313331333133313331312133312122   >>