title: regex: find all words with certain letters but not other
body: <p>can anyone is help me with that:</p>
  
  <p>I need to find all words from list containing letters [t OR d] AND [k OR c] but not any of [s,z,n,m]</p>
  
  <p>I figured out first part, but don't know how to include stop list:</p>
  
  <pre><code>\w*[t|d]\w*[k|c]\w*
  </code></pre>
  
  <p>in Python notation</p>
  
  <p>Thank you in advance</p>