title: OCAML merge two sorted list
body: <p>I'm trying to write code of merge two lists. We assume that first and second list is sorted with &lt;=. So why I received Exception: Failure "tl".
  <a href="http://pastebin.com/NXxnfug9" rel="nofollow">http://pastebin.com/NXxnfug9</a></p>