C31231211113313121211113313331333133313331213331333133312111113331333132321311   >>    C3123121111331312121111331333133313331333121333133313331211111333133313232131   <<    C31231211113313121211113313331333133313331213331333133312111113331333132321313   >>      C31231211113313121211113313331333133313331213331333133312111113331333132321312   >>