if (grep {$_ eq $string} @uniq_strings) { $match++ ; }
    
    #using hash
    elsif (exists $dict{$string}) {
        # loop over all elements in array of hash
        LOOP: foreach $element (@{$dict{$string}}) {
              if (grep {$_ eq $element} @uniq_strings) {
                    $match++ ;
                    last LOOP;
                 }
        }
    }