<table>
<colgroup>
<col style="width:30%" />
<col style="width:50%" />
<col style="width:20%" />
</colgroup>
<tbody>
<tr>
<td>a</td>
<td>b</td>
<td>c</td>
</tr>
</tbody>
</table>

+---+-----+--+
| a | b   | c|
+---+-----+--+

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE document SYSTEM "CommonMark.dtd">
<document xmlns="http://commonmark.org/xml/1.0">
  <grid_table alignments="none none none" widths="3 5 2">
    <grid_table_row section="body">
      <grid_table_cell column="0" colspan="1" rowspan="1">
        <paragraph>
          <text xml:space="preserve">a</text>
        </paragraph>
      </grid_table_cell>
      <grid_table_cell column="1" colspan="1" rowspan="1">
        <paragraph>
          <text xml:space="preserve">b</text>
        </paragraph>
      </grid_table_cell>
      <grid_table_cell column="2" colspan="1" rowspan="1">
        <paragraph>
          <text xml:space="preserve">c</text>
        </paragraph>
      </grid_table_cell>
    </grid_table_row>
  </grid_table>
</document>

<table>
<tbody>
<tr>
<td>a</td>
<td>b</td>
<td>c</td>
</tr>
</tbody>
</table>

+---+-----+--+
| a | b   | c|
+---+-----+--+

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE document SYSTEM "CommonMark.dtd">
<document xmlns="http://commonmark.org/xml/1.0">
  <grid_table alignments="none none none" widths="3 5 2">
    <grid_table_row section="body">
      <grid_table_cell column="0" colspan="1" rowspan="1">
        <paragraph>
          <text xml:space="preserve">a</text>
        </paragraph>
      </grid_table_cell>
      <grid_table_cell column="1" colspan="1" rowspan="1">
        <paragraph>
          <text xml:space="preserve">b</text>
        </paragraph>
      </grid_table_cell>
      <grid_table_cell column="2" colspan="1" rowspan="1">
        <paragraph>
          <text xml:space="preserve">c</text>
        </paragraph>
      </grid_table_cell>
    </grid_table_row>
  </grid_table>
</document>