D2311231323331322331323231323132313232113313231333112211232311321   >>    D231123132333132233132323132313231323211331323133311221123231132   <<    D2311231323331322331323231323132313232113313231333112211232311323   >>      D2311231323331322331323231323132313232113313231333112211232311322   >>