C13223313311212111133133313331333133313232233133313132311312121   >>    C1322331331121211113313331333133313331323223313331313231131212   <<    C13223313311212111133133313331333133313232233133313132311312123   >>      C13223313311212111133133313331333133313232233133313132311312122   >>