just for information, we are using a slightly modified version of the search code, which divides the words in commas and excludes similar outputs with doubled commas to divide the words, and, also, it puts the output in an @input array instead of printing it: 
sub search {
    my ($target, $partsLu, $used) = @_;
    unless (length $target) {
        $v = join (",", @$used);
        if (substr($v, 0, 1) eq "," or $v =~ /,,/) {} else {
        push(@input, join (",", @$used))};
        return;
    }
    for my $part (keys %$partsLu) {
        next unless 0 == index $target, $part;
        my $remainder = substr $target, length $part;
        delete $partsLu->{$part} unless --$partsLu->{$part};
        search ($remainder, {%$partsLu}, [@$used, $part]);
    }
}

[download]

In reply to Re^5: combining array items to match a certain string by pc2
in thread combining array items to match a certain string by pc2

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.