C31231211111133131211113313331333132233131211111211113313113313232212131   >>    C3123121111113313121111331333133313223313121111121111331311331323221213   <<    C31231211111133131211113313331333132233131211111211113313113313232212133   >>      C31231211111133131211113313331333132233131211111211113313113313232212132   >>