use strict;
use warnings;
use Data::Dump;

my $HASH1 =
{
    'Alabama'    => ['Andalusia', 'Anniston', 'Clanton', 'Eufaula', 'Auburn',
                     'Bessemer',  'Eufaula',  'Auburn',  'Bessemer' ],
    'California' => ['Barstow',   'Barstow'],
    'Georgia'    => ['Darien'],
    'New York'   => ['Amsterdam', 'Coney Island', 'Coney Island', 'Beacon', 'Becon']
};

print "Values stored in anonymous arrays:\n";
dd $HASH1;
my $HASH2;

for my $key (keys %$HASH1)
{
    ++$HASH2->{$key}{$_} for @{ $HASH1->{$key} };
}

print "\nValues stored in anonymous hashes:\n";
dd $HASH2;