You seem to be on the right track. Here's an idea:

while ( <DATA> ) {
   @tokens = split(/\t+/, $_ );
   foreach $tok (@tokens) {
      delete $hash{$tok};
   }   
}
foreach $tok ( keys( %hash ) ) {
   print "$tok\n";
}

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In reply to Re: searching and printing what is wanted by ehdonhon
in thread searching and printing what is wanted by snowy

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