title: rewrite image paths based on filename
body: <p>Right now, Im rewriting the images paths so "images/tnAhF38eS.jpg" is located at "images/tn/tnAhF38eS.jpg" with:</p>
  
  <pre><code>RewriteRule ^/images/(t([a-zA-Z0-9]).+\.jpg)$ /images/t${lc:$2|$2}/$1 [L]
  </code></pre>
  
  <p>First char is always "t" and second is lowercase letter or number.</p>
  
  <p>But, I want to add another level based on the uppercase 3rd character so that "images/tnAhF38eS.jpg" is located at "images/tn/A/tnAhF38eS.jpg"</p>
  
  <p>How do I add that?</p>
  
  <p>Thanks!!</p>