C13223313311212111133133313331333132313231322331323133313232211231   >>    C1322331331121211113313331333133313231323132233132313331323221123   <<    C13223313311212111133133313331333132313231322331323133313232211233   >>      C13223313311212111133133313331333132313231322331323133313232211232   >>