D2311231323331322331313232233132322331311221123231323132313231131211   >>    D231123132333132233131323223313232233131122112323132313231323113121   <<    D2311231323331322331313232233132322331311221123231323132313231131213   >>      D2311231323331322331313232233132322331311221123231323132313231131212   >>