title: regex to remove alphanumeric from text
body: <p>I am trying to remove the alphanumeric attached in front the text of words variable. I tried regex but not works.Please help. </p>
  
  <pre><code>words = c("A120 condition of returned veh","B520 vehivle of returned ve","petrol reserve switch")
  </code></pre>
  
  <pre><code>Expected result = 
  "condition of returned veh"
  "vehivle of returned ve"
  "petrol reserve switch"
  </code></pre>