  <td>cell3</td>
	            <td>cell4</td>
	        </tr>
	    </tbody>
</table>
=>
<table>
		<tbody>
			<tr>
				<td colspan="2">
					cell1cell2</td>
			</tr>
			<tr>
				<td>
					cell3</td>
				<td>
					cell4</td>
			</tr>
		</tbody>
</table>
</textarea>

<textarea id='merge-cells-4'>
<table>
	    <tbody>
	        <tr>
	            <td rowspan="2">cell1</td>
	            <td colspan="2">cell2</td>
	        </tr>
	        <tr>
	            <td rowspan="2">[cell3</td>
	            <td>cell4]</td>
	    