C31231211113313121211113313331333133313311211331333133313331322211231   >>    C3123121111331312121111331333133313331331121133133313331333132221123   <<    C31231211113313121211113313331333133313311211331333133313331322211233   >>      C31231211113313121211113313331333133313311211331333133313331322211232   >>