C312312111133131212111133133313331333133312133313331333132212222321   >>    C31231211113313121211113313331333133313331213331333133313221222232   <<    C312312111133131212111133133313331333133312133313331333132212222323   >>      C312312111133131212111133133313331333133312133313331333132212222322   >>