my @c = split /,/, $hand;
    my $total = 0;

    for my $i1 (0..4) {
        for my $i2 ($i1+1..4) {
            $total += 2 if $c[$i1] + $c[$i2] == 15;
            for my $i3 ($i2+1..4) {
                $total += 2 if $c[$i1] + $c[$i2] + $c[$i3] == 15;
                for my $i4 ($i3+1..4) {
                    $total += 2 if $c[$i1] + $c[$i2] + $c[$i3] + $c[$i4] == 15;
                    for my $i5 ($i4+1..4) {
                        $total += 2 if $c[$i1] + $c[$i2] + $c[$i3] + $c[$i4] + $c[$i5] == 15;
                    }
                }
            }
        }
    }