<table>
<tr>
<td rowspan="2" height="50">1</td>
<td>2</td>
</tr>
<tr>
<td rowspan="2">4</td>
</tr>
<tr>
<td>3</td>
</tr>
</table>
table {
border: 1px solid;
border-collapse:collapse;
}
td {
border: 1px solid;
padding: 10px;
}