C31231211111133131211113313331333132233133313331313331311331232321311   >>    C3123121111113313121111331333133313223313331333131333131133123232131   <<    C31231211111133131211113313331333132233133313331313331311331232321313   >>      C31231211111133131211113313331333132233133313331313331311331232321312   >>