</b></td>
						</tr>
						<tr>
							<td>''</td>
							<td>0</td>
							<td>empty string</td>
						</tr>
						<tr>
							<td>'a'</td>
							<td>1</td>
							<td>single char, vowel</td>
						</tr>
						<tr>
							<td>'b'</td>
							<td>0</td>
							<td>single char, non-vowel</td>
						</tr>
						<tr>
							<td>'pfffft'</td>
							<td>0</td>
							<td>several chars, no vowels</td>
						</tr>
						<tr>
							<td>'bandit'</td>
							<td>2</td>
							<td>several chars, some vowels</td>
	