#!/usr/local/bin/perl
use strict;
use warnings;
use Data::Dumper;

my @a = ('rev','test','neko');
my @c = (
{'beji'=>'bej','neko'=>'nek','rev'=>'re','test'=>'tes'},
{'beji'=>'bej2','neko'=>'nek3','rev'=>'re4','test'=>'tes5'}
);

my $g = {};
foreach my $cc (@c){
my $b = 1;
foreach my $d (@a){
  $b = {$cc->{$d} => $b};
}
%$g = %$b;
}
warn Dumper $g;