C31231211111133131211113313331333132233133313331333132333132321231   >>    C3123121111113313121111331333133313223313331333133313233313232123   <<    C31231211111133131211113313331333132233133313331333132333132321233   >>      C31231211111133131211113313331333132233133313331333132333132321232   >>