Code

<html>
<body>
<table height="90%" width="70%" border="3">
        <tr>
            <td height="85"> A </td>
            <td height="170"rowspan="2"> B </td>
            <td rowspan="3"> C </td>
        </tr>
        <tr>
            <td height="170"rowspan="2"> D </td>
        </tr>
        <tr>
            <td height="85"> E </td>
        </tr>
        <tr height="85">
            <td> F </td>
            <td> G </td>
            <td> H </td>
        </tr>
    </table>

    </body>
    </html>