$VAR1 = [
          undef,
          undef,
          'NETLIST'
        ];
$VAR1 = [
          undef,
          undef,
          undef,
          [
            undef,
            undef,
            'NETLIST'
          ]
        ];
$VAR1 = [
          undef,
          undef,
          undef,
          undef,
          [
            undef,
            undef,
            undef,
            [
              undef,
              undef,
              'NETLIST'
            ]
          ]
        ];