C31231211111133131211113313331333133313332233132313331333132333133313122311   >>    C3123121111113313121111331333133313331333223313231333133313233313331312231   <<    C31231211111133131211113313331333133313332233132313331333132333133313122313   >>      C31231211111133131211113313331333133313332233132313331333132333133313122312   >>