title: Regular expression for !(A|B) e.g not (a or b )
body: <p>I am using Vb.net and have following three lines and need to pick only third one leaving first and second. I tried !(REQUIRED|ESTIMATED) but it did't work.</p>
  
  <pre><code>My reg expression is !(REQUIRED|ESTIMATED) also tried but did
  not work ^(REQUIRED|ESTIMATED)
  
  09359109359REQUIRED 00000000103332014022841000099999999900000000063140000000018570
  09359109359ESTIMATED00000000130452014030453000000001435000000000038560000000018570
  09359109359999999999000000000058671
  </code></pre>