title: regex match everything up till last number
body: <p>I have a couple of strings that look like this</p>
  
  <pre><code>EXT. 6TH STREET12B
  EXT. HOSPITAL20
  EXT. 20TH STREET 40AB
  </code></pre>
  
  <p>How do I match everything up till the last number starts. The result needs to be:</p>
  
  <pre><code>EXT. 6TH STREET
  EXT. HOSPITAL
  EXT. 20TH STREET
  </code></pre>
  
  <p>I'm not a regex expert at all. I tried a few things but nothing seems to come close.</p>