C31231211111133131211113313331333132233131211111211113313223321311   >>    C3123121111113313121111331333133313223313121111121111331322332131   <<    C31231211111133131211113313331333132233131211111211113313223321313   >>      C31231211111133131211113313331333132233131211111211113313223321312   >>