D2311231323331322331313232233132313231333131322331323132312312321   >>    D231123132333132233131323223313231323133313132233132313231231232   <<    D2311231323331322331313232233132313231333131322331323132312312323   >>      D2311231323331322331313232233132313231333131322331323132312312322   >>