title: Regular expression to match 3 alphanumeric chars except '000' "001" and '002'
body: <p>I need an pattern that match any 3 Alpha-numeric characters (like [0-9A-Z]{3}) but excluding 000 001 002</p>
  
  <pre><code>AAA - pass
  003 - pass
  123 - pass
  000 - fail
  001 - fail
  002 - fail
  </code></pre>
  
  <p>UPDATE: sorry for incomplete question. The 3 alphanumerics are actually part of larger pattern: QUEO_BK20\d{2}(0[1-9]|1[012])(0[1-9]|[12][0-9]|3[01])(?!00[012])<strong>[0-9A-Z]{3}</strong>.csv</p>
  
  <p>The patterns like (?!00[012])[0-9A-Z]{3} worked for 3 chars only but not as a part of the whole pattern.</p>
  
  <p>and I am using .NET</p>