		<td>a</td>
				<td>a</td>
				<td>b</td>
				<td>c</td>
				</tr>
				<tr>  
				<td>b</td>
				<td>d</td>
				<td>e</td>
				<td>c</td>
				</tr>
				<tr>  
				<td>c</td>
				<td>s</td>
				<td>b</td>
				<td>p</td>
				</tr>
			</tbody>
		</table><br>
	d) H={a,b,c} (.) dada por: <br>
		<table border="2" bordercolor="black" align ="center" width="50%" class="texto">
		<p align="center" style="color: white">(.)</p>
	  		<tbody align ="center" style="color: white" >
			<tr>
				<td><b>(.)</b></td>
				<td