C11111333133313232233133313331333132313331323321313331333132112112121   >>    C1111133313331323223313331333133313231333132332131333133313211211212   <<    C11111333133313232233133313331333132313331323321313331333132112112123   >>      C11111333133313232233133313331333132313331323321313331333132112112122   >>