C312312111133131212111133133313331333133312133313331333112222331   >>    C31231211113313121211113313331333133313331213331333133311222233   <<    C312312111133131212111133133313331333133312133313331333112222333   >>      C312312111133131212111133133313331333133312133313331333112222332   >>