use RainbowTable;

# I know we don't need a hash, but the module requires one.
my $generator = RainbowTable->new(
   hash => 'MD5', 
   chars => [ ('A'..'Z'), ('a'..'z'), (0..9) ],
   minlength => 3,
   maxlength => 3,
);

while ($generator->next) {
   print $generator->string, "\n";
}