1<html xmlns="http://www.w3.org/1999/xhtml"> 2<body> 3 <table> 4 <tr> 5 <td>x</td> 6 <td rowspan="4" colspan="4">y</td> 7 </tr> 8 <tr> 9 <td rowspan="0" colspan="0">z</td> 10 <td>w</td> 11 </tr> 12 </table> 13</body> 14</html>