C312312111133131212111133133313331333133312133313331333131323223311211321   >>    C31231211113313121211113313331333133313331213331333133313132322331121132   <<    C312312111133131212111133133313331333133312133313331333131323223311211323   >>      C312312111133131212111133133313331333133312133313331333131323223311211322   >>