#!/usr/bin/perl -w

my $m = [];
$m->[0] = [1,2,3,4,0];
$m->[1] = [1,2,3,5,6];
$m->[2] = [1,2,3];
$m->[3] = [3,1,2];
$m->[4] = [3,2,1,0];
my $a = perms($m);

foreach my $i (@{ $a }) {
    print "Item: $i\n";
}
print "Total: ", $#{ $a }, "\n";
exit;

sub perms {
    my ($m) = shift;

    my @a = ();
    my $n = 0;
    for my $a (0..$#{ $m->[0]}) {
        for my $b (0..$#{ $m->[1] }) {
            for my $c (0..$#{ $m->[2] }) {
                for my $d (0..$#{ $m->[3] }) {
                    for my $e (0..$#{ $m->[4] }) {
                        push @a, $m->[0]->[$a].$m->[1]->[$b].$m->[2]->[$c].$m->[3]->[$d].$m->[4]->[$
e];
                    }
                }
            }
        }
    }
    @a = sort @a;
    return \@a;
}