my $house = 1;
   my $car = 1;
   my @passed = ($house, $car);
   my ($t1, $t2) = good(@passed);

##</code><code>##

   my $house = 1;
   my $car;
   my @passed = ($house, $car);
   my ($t1, $t2) = good(@passed);

##</code><code>##

   my $house = 1;
   my $car;
   my @passed;
   my ($t1, $t2) = good(@passed);