<html>
<body>
<table border="1">
<tr>
<td rowspan="4">AAA</td><td>111</td><td>222</td><td>333</td> <!-- 列合并4个td -->
</tr>
<tr>
<td>444</td><td>555</td><td>666</td> <!-- 列少一个td -->
</tr>
<tr>
<td>777</td><td>888</td><td>999</td> <!-- 列少一个td -->
</tr>
<tr>
<td>000</td><td>aaa</td><td>bbb</td> <!-- 列少一个td -->
</tr>
</table>
<table border="1">
<tr>
<td colspan="4">AAA</td> <!-- 行合并4个td -->
</tr>
<tr>
<td>444</td><td>444</td><td>555</td><td>666</td>
</tr>
<tr>
<td>444</td><td>777</td><td>888</td><td>999</td>
</tr>
<tr>
<td>444</td><td>000</td><td>aaa</td><td>bbb</td>
</tr>
</table>
</body>
</html>
