C31231211113313121211113313331333133313311211331333133313132132223221   >>    C3123121111331312121111331333133313331331121133133313331313213222322   <<    C31231211113313121211113313331333133313311211331333133313132132223223   >>      C31231211113313121211113313331333133313311211331333133313132132223222   >>