C312312111133131212111133131133133313331323223313232233131232311   >>    C31231211113313121211113313113313331333132322331323223313123231   <<    C312312111133131212111133131133133313331323223313232233131232313   >>      C312312111133131212111133131133133313331323223313232233131232312   >>