C312312111133131212111133133313331333133312133313113313331333232132221   >>    C31231211113313121211113313331333133313331213331311331333133323213222   <<    C312312111133131212111133133313331333133312133313113313331333232132223   >>      C312312111133131212111133133313331333133312133313113313331333232132222   >>