C312312111133131212111133133313331333133312133313113313232233131331   >>    C31231211113313121211113313331333133313331213331311331323223313133   <<    C312312111133131212111133133313331333133312133313113313232233131333   >>      C312312111133131212111133133313331333133312133313113313232233131332   >>