class Interface {
  void implementedConcreteMethod() {}
  void implementedAbstractMethod();
  void declaredConcreteImplementsConcreteMethod() {}
  void declaredAbstractImplementsConcreteMethod() {}
  void declaredConcreteImplementsAbstractMethod();
  void declaredAbstractImplementsAbstractMethod();
}

class ConcreteClass implements Interface {
  void declaredConcreteMethod() {}
  void declaredAbstractMethod();
  void declaredConcreteImplementsConcreteMethod() {}
  void declaredAbstractImplementsConcreteMethod();
  void declaredConcreteImplementsAbstractMethod() {}
  void declaredAbstractImplementsAbstractMethod();
}

main() {}