C11111333133313232233133313331333132332322121111331333131323121   >>    C1111133313331323223313331333133313233232212111133133313132312   <<    C11111333133313232233133313331333132332322121111331333131323123   >>      C11111333133313232233133313331333132332322121111331333131323122   >>