D11212112331311331313231322132313331313232233132312311331322121   >>    D1121211233131133131323132213231333131323223313231231133132212   <<    D11212112331311331313231322132313331313232233132312311331322123   >>      D11212112331311331313231322132313331313232233132312311331322122   >>