C312312111111331312111133133313331333121111331333133313331333132322121231   >>    C31231211111133131211113313331333133312111133133313331333133313232212123   <<    C312312111111331312111133133313331333121111331333133313331333132322121233   >>      C312312111111331312111133133313331333121111331333133313331333132322121232   >>