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  1. or download this
    undef @theseWords;
        @theseWords = split( / /, $line );
    
  2. or download this
           $Line{$word} =~ m/(\d*?)$/;
            if ( $1 == $count ) {
                    next;
                } else {
                    $Line{$word} .= ", $count";
    
  3. or download this
    push @{$Line{$word}}, $count
       unless exists $Line{$word} && $Line{$word}[-1] == $count;