abstract class AbstractSuper {
  int get extendedConcreteGetter => 0;
  int get extendedAbstractGetter;
  int get declaredConcreteExtendsConcreteGetter => 0;
  int get declaredAbstractExtendsConcreteGetter => 0;
  int get declaredConcreteExtendsAbstractGetter;
  int get declaredAbstractExtendsAbstractGetter;
}

abstract class AbstractClass extends AbstractSuper {
  int get declaredConcreteGetter => 0;
  int get declaredAbstractGetter;
  int get declaredConcreteExtendsConcreteGetter => 0;
  int get declaredAbstractExtendsConcreteGetter;
  int get declaredConcreteExtendsAbstractGetter => 0;
  int get declaredAbstractExtendsAbstractGetter;
}

main() {}