D13133313221323331323331313113313233313231322331323223313133123231   >>    D1313331322132333132333131311331323331323132233132322331313312323   <<    D13133313221323331323331313113313233313231322331323223313133123233   >>      D13133313221323331323331313113313233313231322331323223313133123232   >>