r>
    <tr>
      <td><br>
      </td>
      <td><span style="font-style: italic;">PHG_FINAL_OUTPUT=0</span></td>
    </tr>
    <tr>
      <td><br>
      </td>
      <td><i>PHG_REDUCTION_METHOD=ipm</i></td>
    </tr>
    <tr>
      <td><br>
      </td>
      <td><span style="font-style: italic;">PHG_REDUCTION_LIMIT=100</span></td>
    </tr>
    <tr>
      <td><br>
      </td>
      <td><span style="font-style: italic;">PHG_VERTEX_VISIT_ORDER=0</span></td>
    </tr>
    <tr>
      <td><br>
      </td>
      