C31231211113313121211113313331333133313311211331333133313232222131   >>    C3123121111331312121111331333133313331331121133133313331323222213   <<    C31231211113313121211113313331333133313311211331333133313232222133   >>      C31231211113313121211113313331333133313311211331333133313232222132   >>