C31231211113313121211113313331323133313331333133313332233133313111211   >>    C3123121111331312121111331333132313331333133313331333223313331311121   <<    C31231211113313121211113313331323133313331333133313332233133313111213   >>      C31231211113313121211113313331323133313331333133313332233133313111212   >>