<html>
	<body>
		<table>
			<tr>
				<td id="A" width='1' style="background:blue"></td>
			</tr>
			<tr>
				<td id="B" colspan='2' rowspan='2' style="background:green"></td>
			</tr>
			<tr>
				<td id="C" rowspan='2' style="background:red"></td>
			</tr>
			<tr>
				<td id="D" colspan='2' style="background:cyan">
					<table>
						<tr>
							<td id="E" style="background:magenta"></td>
							<td id="F" style="background:yellow">
								<input type='text' />
							</td>
						</tr>
					</table>
				</td>
			</tr>
		</table>
	</body>
</html>