D2311231323331322331313232233132313231333131322331323132312322131   >>    D231123132333132233131323223313231323133313132233132313231232213   <<    D2311231323331322331313232233132313231333131322331323132312322133   >>      D2311231323331322331313232233132313231333131322331323132312322132   >>