title: Find all (most) html codes using regex in one expression
body: <p>I'm trying to search through many documents and find all instances where an html code is specified, except when &amp;gt and &amp;lt are used.  </p>
  
  <p>The folloiwng search</p>
  
  <pre><code>&amp;[a-z]*\;
  </code></pre>
  
  <p>matches all HTML codes, eg &nbsp; &amp;gt etc.</p>
  
  <p>I would like to modify this search so I can say, give me all HTML codes EXCEPT &amp;gt and &amp;lt.  I need to be able to do this in one expression.</p>
  
  <p>Using <a href="http://regexpal.com/" rel="nofollow">http://regexpal.com/</a> and the following as the sample text:</p>
  
  <pre><code>&amp;nbsp;&amp;gt;&amp;lt;&amp;trade;
  </code></pre>
  
  <p>Only the first and last codes should be highlighted</p>