C31231211113313121211113313331333133313331213331333133312113313221333132311111   >>    C3123121111331312121111331333133313331333121333133313331211331322133313231111   <<    C31231211113313121211113313331333133313331213331333133312113313221333132311113   >>      C31231211113313121211113313331333133313331213331333133312113313221333132311112   >>