C11111333133313232233133313331333132313331323321313331333133313123121321   >>    C1111133313331323223313331333133313231333132332131333133313331312312132   <<    C11111333133313232233133313331333132313331323321313331333133313123121323   >>      C11111333133313232233133313331333132313331323321313331333133313123121322   >>