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Test Info:
<!DOCTYPE html>
<html>
<head>
<meta charset=utf-8>
<style>
table { writing-mode: vertical-rl; }
td { border: 1px solid black; }
.r1 { width: 50px; background: #800; }
.r2 { width: 100px ;background: #080; }
.r3 { width: 20px; background: #008; }
.c1 { height: 20px; }
.c2 { height: 30px; }
.c3 { height: 40px; }
.c4 { height: 50px; }
</style>
</head>
<body>
<table>
<tr>
<td class="r3 c1"></td>
<td class="r3 c2"></td>
<td class="r3 c3" rowspan=3></td>
<td class="r3 c4" rowspan=2></td>
</tr>
<tr>
<td class="r2 c1" rowspan=2></td>
<td class="r2 c2"></td>
</tr>
<tr>
<td class="r1 c2"></td>
<td class="r1 c4"></td>
</tr>
</table>
</body>
</html>