use strict;
use warnings;

@_ = (2..10,'J','Q','K','A');
comb('', 4, 2..4,6..10,'J','Q','K','A',@_,@_,@_);
sub comb {
    my ($str, $depth, @items) = @_;
    if (!$depth--) { interpret($str); return; }
    comb("$str $items[$_]", $depth, @items[($_+1)..$#items]) for (0..$#items)
}
sub interpret {
    my @cards = split / /, "5$_[0]";
    # Do whatever with @cards;
}

##</code><code>##

@_ = (2..4,6..9,'A');
comb('', 4, @_,@_,@_,@_);

##</code><code>##

comb('', 4, 2..4,6..9,'A');

##</code><code>##

use strict;
use warnings;

comb('', 4, 1..4,6..9);
sub comb {
    my ($str, $depth, @items) = @_;
    if (!$depth--) { interpret($str); return; }
    comb("$str $items[$_]", $depth, @items[($_+1)..$#items]) for (0..$#items)
}
sub interpret {
    my @cards = split / /, "5$_[0]";
    @cards = sort {$b <=> $a} @cards;
    my $flag = 1;
    for (0..3) { $flag = 0 if $cards[$_+1] != ($cards[$_]-1); }
    return if $flag;
    for (perm(@cards)) {
        return if sum(split //) == 15;
    }
    print join " ", @cards;
}

BEGIN {
    my @c_out;
    sub perm {
        @c_out = ();
        permute('', $_, @_) for (0..$#_);
        return @c_out;
    }
    sub permute {
        my ($str, $depth, @chars) = @_;
        if (!$depth--) {
            push @c_out, $str.$_ for @chars;
        }
        else {
            permute($str.$chars[$_], $depth, @chars[($_+1)..($#chars)])
                for (0..$#chars);
        }
    }
}

sub sum { my $n; $n += $_ for @_; return $n; }