ass="aqua"></colgroup>
  <colgroup>
    <col class="blue">
    <col span=2 class="navy">
  </colgroup>
  <tr><td><td><td><td><td>
</table>

<table class="reference">
  <tr><td class="navy">
  <tr><td class="navy">
  <tr><td class="blue">
  <tr><td class="aqua">
  <tr><td class="aqua">
</table>
