open (my $inwp , "<:encoding(utf8)" , "$pwt") or die "$pwt: $!" ; while (<$inw>) { my @pwords ; my @ptw ; my $elementp ; my $countp ; @pwords = split (/\n/ , $inwp) ; #### open (my $nwt , "<:encoding(utf8)" , "$ntw" ) or die "$ntw: $!" ; while (<$itw>) { $numlinenw++ ; my @nwords ; my @ntw ; my $elementn ; my $countn ; @nwords = split (/\n/ , $nwt) ;