C31231211113313121211113313331333133313311211331333132231233131   >>    C3123121111331312121111331333133313331331121133133313223123313   <<    C31231211113313121211113313331333133313311211331333132231233133   >>      C31231211113313121211113313331333133313311211331333132231233132   >>