note ambrus <p> See also [http://article.gmane.org/gmane.comp.lang.perl.qotw.quiz-of-the-week/109|Word ladder: expert quiz #22 on the Perl Quiz of the Week (qotw) mailing list] and [http://article.gmane.org/gmane.comp.lang.perl.qotw.discuss/2118|my solution for example]. 558342 558342