D2311231323331322331313232233132322331311221123231323132313132322111   >>    D231123132333132233131323223313232233131122112323132313231313232211   <<    D2311231323331322331313232233132322331311221123231323132313132322113   >>      D2311231323331322331313232233132322331311221123231323132313132322112   >>