C31231211113313121211113313331333133313311211331333133313123313113313232131   >>    C3123121111331312121111331333133313331331121133133313331312331311331323213   <<    C31231211113313121211113313331333133313311211331333133313123313113313232133   >>      C31231211113313121211113313331333133313311211331333133313123313113313232132   >>