D2311231323331322331313232233132313231323221133132333132313331322221   >>    D231123132333132233131323223313231323132322113313233313231333132222   <<    D2311231323331322331313232233132313231323221133132333132313331322223   >>      D2311231323331322331313232233132313231323221133132333132313331322222   >>