C312312111133131212111133133313331333133312133313331333132122321   >>    C31231211113313121211113313331333133313331213331333133313212232   <<    C312312111133131212111133133313331333133312133313331333132122323   >>      C312312111133131212111133133313331333133312133313331333132122322   >>