class ConcreteSuper {
  final int extendedConcreteField = 0;
  abstract final int extendedAbstractField;
  final int declaredConcreteExtendsConcreteField = 0;
  final int declaredAbstractExtendsConcreteField = 0;
  abstract final int declaredConcreteExtendsAbstractField;
  abstract final int declaredAbstractExtendsAbstractField;
}

class ConcreteClass extends ConcreteSuper {
  final int declaredConcreteField = 0;
  abstract final int declaredAbstractField;
  final int declaredConcreteExtendsConcreteField = 0;
  abstract final int declaredAbstractExtendsConcreteField;
  final int declaredConcreteExtendsAbstractField = 0;
  abstract final int declaredAbstractExtendsAbstractField;
}

main() {}