title: Drawing a simple non-deterministic finite automaton (NFA)
body: <p>How can I draw NFA (automaton) for this question?</p>
  
  <p>First it should accept:</p>
  
  <ul>
  <li><p>alphabet = x,y,z</p></li>
  <li><p>L= { w | w such that, one of the number of occurrence x,y,z is multiple of three. }</p></li>
  </ul>
  
  <p>For example: {xxx, yyy, zzz, xyxyzzz, xyxyx, zyzyz...}</p>