title: How to grep this pattern: "LEJ|???|WRO"?
body: <p>I'm trying to find the files with lines: <code>LEJ|xxx|WRO</code></p>
  
  <p>The 3 characters in between to be ignored..</p>
  
  <p>tried</p>
  
  <pre><code>grep -l LEJ|???|WRO *
  </code></pre>
  
  <p>it doesn't work.. any advice?</p>