use strict; use warnings; my $sku = join ',', qw/SKU1 SKU2 SKU3/; my $tslh = join ',', qw/T S L H/; my $size = join ',', qw/S M L XL 2X /; my $color = join ',', qw/BLU GRN WHT BLK/; print "$_\n" for glob "{$sku}{$tslh}{$size}{$color}";