title: Comparing two lists of symbols in lisp
body: <p>Let's say I have two lisp lists that are the same but in different sequence: <code>'(A B C)</code> and '<code>(C B A)</code>.
  How can I check if they are the same (in the sense that the elements are the same)?</p>
  
  <pre><code>CL-USER&gt; (equal '(a b c) '(c b a))
  NIL
  </code></pre>