D2311231323331322331313232233132313231323221133132333132313311212131   >>    D231123132333132233131323223313231323132322113313233313231331121213   <<    D2311231323331322331313232233132313231323221133132333132313311212133   >>      D2311231323331322331313232233132313231323221133132333132313311212132   >>