#!/bin/perl
use strict;
use warnings;
use XML::Twig;
my %Items;
my $twig=XML::Twig->new(
    twig_handlers => 
      {_all_ => sub {my $ancestors = ($_->ancestors);
		
if ($ancestors =~ m/us:ItemMasterHeader/ )
{my $element_match = ($_->tag); 
 my $coupled = join( ' - ' => 
$element_match,keys %{$_->atts},values %{$_->atts}),; 
      	if (!defined $Items{$coupled}){$Items{$coupled}=1}   
    	else {$Items{$coupled}++;}
}
                    },   
#If element is not in the hash, adds it
#If element is in the hash, adds the number of matches to the value

print "\n Elements \n \n";
foreach my $k (sort keys %Items) {print "$k => $Items{$k}\n";};