title: Capturing String Right Before Comma in Regex
body: <p>I am writing some raw Regex code and testing them on online testers. I want to capture a list of strings right
  before a comma. Specifically, I want to capture up to 3 strings right before a comma. Ex.</p>
  
  <pre><code>string string string,
  </code></pre>
  
  <p>I want to capture "string string string" (including spaces).</p>
  
  <p>How do I do that?</p>