D13133313221323331323331313113313233313231322331323223313132121   >>    D1313331322132333132333131311331323331323132233132322331313212   <<    D13133313221323331323331313113313233313231322331323223313132123   >>      D13133313221323331323331313113313233313231322331323223313132122   >>