D2311231323331322331313232233132313232233132112323132313231322131   >>    D231123132333132233131323223313231323223313211232313231323132213   <<    D2311231323331322331313232233132313232233132112323132313231322133   >>      D2311231323331322331313232233132313232233132112323132313231322132   >>