D11212112331311331313231322132313331313232233132322112211232313221   >>    D1121211233131133131323132213231333131323223313232211221123231322   <<    D11212112331311331313231322132313331313232233132322112211232313223   >>      D11212112331311331313231322132313331313232233132322112211232313222   >>