C312312111133131212111133133313331333133112113313331312113313232233131   >>    C31231211113313121211113313331333133313311211331333131211331323223313   <<    C312312111133131212111133133313331333133112113313331312113313232233133   >>      C312312111133131212111133133313331333133112113313331312113313232233132   >>