 For each of the following regular expressions the time taken to match against 
         the text indicated was measured.&nbsp;</p>
      <P><table border="1" cellspacing="1">
            <tr>
               <td><strong>Expression</strong></td>
               <td><strong>Text</strong></td>
               <td><strong>GRETA</strong></td>
               <td><strong>GRETA<BR>
                     (non-recursive mode)</strong></td>
               <td><strong>Boost</strong></td>
               <td><strong>Boost +