How to generate passwords?
<blockquote>
  <p><strong>Possible Duplicate:</strong><br>
  <a href="http://stackoverflow.com/questions/4290889/get-all-possible-word-combinations">Get all possible word combinations</a>  </p>
</blockquote>



<p>I have a string <code>"abcdefgklmno0123456789"</code></p>

<p>I need to enumerate all the possible combinations with sizes ranging from 6 to 7 characters.</p>

<p><code>aaaaaa aaaaab aaaaac ... 999999</code></p>
