C11111333133313232233133313331333132313331323321313331311221123231311331211   >>    C1111133313331323223313331333133313231333132332131333131122112323131133121   <<    C11111333133313232233133313331333132313331323321313331311221123231311331213   >>      C11111333133313232233133313331333132313331323321313331311221123231311331212   >>