D11212112331311331313231322132313331313232233132322112211231211111   >>    D1121211233131133131323132213231333131323223313232211221123121111   <<    D11212112331311331313231322132313331313232233132322112211231211113   >>      D11212112331311331313231322132313331313232233132322112211231211112   >>