D13133313221323331323331313113313233313231322331311331323221121   >>    D1313331322132333132333131311331323331323132233131133132322112   <<    D13133313221323331323331313113313233313231322331311331323221123   >>      D13133313221323331323331313113313233313231322331311331323221122   >>