C312312111133131212111133133313331333133312133313113313331333221333132211321   >>    C31231211113313121211113313331333133313331213331311331333133322133313221132   <<    C312312111133131212111133133313331333133312133313113313331333221333132211323   >>      C312312111133131212111133133313331333133312133313113313331333221333132211322   >>