C11111333133313232233133313331333132313331323321313331311331333133321233233121   >>    C1111133313331323223313331333133313231333132332131333131133133313332123323312   <<    C11111333133313232233133313331333132313331323321313331311331333133321233233123   >>      C11111333133313232233133313331333132313331323321313331311331333133321233233122   >>