C312312111133131212111133133313231333133313331322121111331333133112312131   >>    C31231211113313121211113313331323133313331333132212111133133313311231213   <<    C312312111133131212111133133313231333133313331322121111331333133112312133   >>      C312312111133131212111133133313231333133313331322121111331333133112312132   >>