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my @letters = qw(a b c d e); #'a'..'e' also works,
                             #but I didn't want to add
...
    $.++;    # ok, this is silly
        # but I'm making a point ;-)
}

  $_ |  $r |  $.
   a |   1 |
...
   c |   3 |   2
   d |   4 |   3
   e | 5E0 |   4