C31231211111133131211113313231333133313331333133313133313331333132233131232311   >>    C3123121111113313121111331323133313331333133313331313331333133313223313123231   <<    C31231211111133131211113313231333133313331333133313133313331333132233131232313   >>      C31231211111133131211113313231333133313331333133313133313331333132233131232312   >>