title: Regex match for multiple characters
body: <p>I want to write a regex pattern to match a string starting with "Z" and not containing the next 2 characters as "IU" followed by any other characters. </p>
  
  <p>I am using this pattern but it is not working  <strong>Z[^(IU)]+.*$</strong></p>
  
  <ol>
  <li>ZISADR - should match</li>
  <li>ZIUSADR - should not match</li>
  <li>ZDDDDR - should match</li>
  </ol>