title: remove html tags regexp except for <p> and </p>
body: <p>I would like to remove all html tags except for the <code>&lt;p&gt;</code> and <code>&lt;/p&gt;</code> tags</p>
  
  <p>I'm working in c#</p>
  
  <p>For example:   <code>&lt;p&gt;</code>hello<code>&lt;a href=kuku&gt;</code> to you<code>&lt;/a&gt;</code> <code>&lt;/p&gt;</code></p>
  
  <p>should return  <code>&lt;p&gt;</code>hello to you<code>&lt;/p&gt;</code></p>
  
  <p>P.S. I'm using the regexp function but am open to suggestions</p>