D2311231323331322331313232233132313231333131322331323132313213231   >>    D231123132333132233131323223313231323133313132233132313231321323   <<    D2311231323331322331313232233132313231333131322331323132313213233   >>      D2311231323331322331313232233132313231333131322331323132313213232   >>