%report = ();
while (my $line = <$log_file>) {
   my @fields = (split / /, $line);
   $report{$_}++ foreach @fields[2,4,5,9,7,1];
}

##</code><code>##

my @report;
while (my $line = <$log_file>) {
   my @fields = (split / /, $line);
   foreach (@fields[2,4,5,9,7,1]) {
      my %hash;
         foreach (@fields[2,4,5,9,7,1]) {
            $hash{$_}++;
         }
      push @report, \%hash;
   }
}

##</code><code>##

483 OS dx-32 1 charles list4 aardvark.com ty-off lx-on C 01
483 DS dx-14 1 james list3 23.456.12.7 ty-on lx-on B 01
769 XO dx-32 5 sully nolist widgets.com ty-on lx-on V 07

##</code><code>##

@report = (
   {  #### 2 or fields2, something like that
      dx-32 => 2,
      dx-14 => 1,
   },
   { #### fields3, and so on