C312312111133131212111133133313331333133312133313331333113313231   >>    C31231211113313121211113313331333133313331213331333133311331323   <<    C312312111133131212111133133313331333133312133313331333113313233   >>      C312312111133131212111133133313331333133312133313331333113313232   >>