title: Blacklist words in XML
body: <p>My requirement is : 
  "<em>Dont allow blacklisted words to appear in a specific XML tag</em>".</p>
  
  <p>I am trying with xs:restriction using XML regex pattern.</p>
  
  <p>I referenced the following link : <a href="https://stackoverflow.com/questions/812790/restrict-word-list-in-xml-schema">Restrict word list in XML schema</a>.</p>
  
  <p>eg: BLACKLISTED WORDS : <strong>byte,bing,ding</strong></p>
  
  <p>The problem : If the words start with the same letter (<strong>b</strong>), <strong><em>byte</em></strong> passes for <strong><em>bing</em></strong> condition and <em>vice versa</em>.</p>
  
  <p>Is there an AND operator I can use ? Is there any other simpler way ?</p>
  
  <p>Thanks in advance !!</p>