for my $level (0 .. 2) {
for my $height ($level + 1 .. $level + 2) {
my $tests = Scope::Upper::TestGenerator::gen($height, $level);
for my $level (0 .. 2) {
for my $height ($level + 1 .. $level + 2) {
my $tests = Scope::Upper::TestGenerator::gen($height, $level);