C11111333133313232233133313331333132313331323321313331313213321   >>    C1111133313331323223313331333133313231333132332131333131321332   <<    C11111333133313232233133313331333132313331323321313331313213323   >>      C11111333133313232233133313331333132313331323321313331313213322   >>