C31231211111133131211113313331333132233133313331311331323122311   >>    C3123121111113313121111331333133313223313331333131133132312231   <<    C31231211111133131211113313331333132233133313331311331323122313   >>      C31231211111133131211113313331333132233133313331311331323122312   >>