Merged Table HTML

<table class="tg">
<thead>
<tr>
<th class="tg-0lax" style="vertical-align: middle;" rowspan="4">one</th>
<th class="tg-0lax" rowspan="2" style="vertical-align: middle;">two</th>
<th class="tg-0lax">three</th>
</tr>
<tr>
<th class="tg-0lax">four</th>
</tr>
<tr>
<th class="tg-0lax" rowspan="2" style="vertical-align: middle;">five</th>
<th class="tg-0lax">six</th>
</tr>
<tr>
<th class="tg-0lax">seven</th>
</tr>
</thead>
<tbody>
<tr>
<td class="tg-0lax" style="vertical-align: middle;" rowspan="4">eight</td>
<td class="tg-0lax" rowspan="2" style="vertical-align: middle;">nine</td>
<td class="tg-0lax">ten</td>
</tr>
<tr>
<td class="tg-0lax">eleven</td>
</tr>
<tr>
<td class="tg-0lax" rowspan="2" style="vertical-align: middle;">twelve</td>
<td class="tg-0lax">thirteen</td>
</tr>
<tr>
<td class="tg-0lax">fourteen</td>
</tr>
</tbody>
</table>