C312312111133131212111133133313331333133312133313231333132213111121   >>    C31231211113313121211113313331333133313331213331323133313221311112   <<    C312312111133131212111133133313331333133312133313231333132213111123   >>      C312312111133131212111133133313331333133312133313231333132213111122   >>