Try this. It does the lc() and the tr/// only once. 

#!/usr/bin/perl

use strict; # https://perlmonks.org/?node_id=11116620
use warnings;

my @excluded = qw( a about although also an and another are as at be b
+een
    before between but by can do during for from has how however in in
+to is
    it many may more most etc );

local $/;
my %count;
$count{$_}++ for split ' ', (lc <>) =~ tr!-'@~,.()?*%/[]="!!dr;
delete @count{@excluded};

print "$count{$_} $_\n"
  for sort { $count{ $b } <=> $count{ $a } || $a cmp $b } keys %count;

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In reply to Re: Counting and Filtering Words From File by tybalt89
in thread Counting and Filtering Words From File by maxamillionk

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