C1311213331333132332133313331333133313331333133313331333131232232111113213111   >>    C131121333133313233213331333133313331333133313331333133313123223211111321311   <<    C1311213331333132332133313331333133313331333133313331333131232232111113213113   >>      C1311213331333132332133313331333133313331333133313331333131232232111113213112   >>