use strict;
use warnings;

# two sample entries, notice i moved this comment
my %modhash =
(
   'first:second:third' => [ qw(bob bill bo) ],
   'Canada:USA:China'   => [ qw(beaver eagle Mao) ],
);

for my $key ( keys %modhash )
{
  my @subkeys = split( /:/, $key );
  for my $i (0..$#subkeys)
  {
    print "subkey-> $subkeys[$i]\t",
          "subvalue-> $modhash{$key}->[$i]\n";
  }
  print "\n";
}