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<table border="1">
<tr>
<td rowspan="2">1</td>
<td>2</td>
<td rowspan="3">3</td>
</tr>
<tr>
<td rowspan="2">5</td>
</tr>
<tr>
<td rowspan="2">4</td>
</tr>
<tr>
<td colspan="2">6</td>
</tr>
<tr>
<td colspan="3">7</td>
</tr>
</table>