my $i=0;
map {$keywordhash{$_}=(++$i);} @keywords;


##</code><code>##

%keywordhash = map {$_ => 1} @keywords;


##</code><code>##

do {$keywordhash{$_}=(++$i);} for @keywords;


##</code><code>##

%keywordhash = map { $_ => ++$i } @keywords;


##</code><code>##

@/=map{[/./g]}qw/.h_nJ Xapou cets krht ele_ r_ra/;
map{y/X_/\n /;print}map{pop@$_}@/for@/