C3123121111331312121111331333133313331331121133133313122113313232212121   >>    C312312111133131212111133133313331333133112113313331312211331323221212   <<    C3123121111331312121111331333133313331331121133133313122113313232212123   >>      C3123121111331312121111331333133313331331121133133313122113313232212122   >>