title: C# Regex to extract after capture group numbers only
body: <p>I'm not sure what I'm doing wrong. I have the following:</p>
  
  <pre><code>(?:[A-Z]{2}\d{2}\s)
  </code></pre>
  
  <p>This is because my string always starts with two upper alpha characters and 2 numeric. Afterwards I have data that is mixed with words and I only want the numbers I want to take this <code>AB12 (1,2,3 words, 4,5,6,7,8,9)</code> and obtain this <code>AB12 (1,2,3,4,5,6,7,8,9)</code></p>
  
  <p>I was trying </p>
  
  <pre><code>(?:[A-Z]{2}\d{2}\s)([0-9]+)
  </code></pre>
  
  <p>however this is not working. Was I even close in achieving my goal?</p>