class Interface1 {
  int implementMultipleField = 0;
  int declareConcreteImplementMultipleField = 0;
  int declareAbstractImplementMultipleField = 0;
}

class Interface2 {
  int implementMultipleField = 0;
  int declareConcreteImplementMultipleField = 0;
  int declareAbstractImplementMultipleField = 0;
}

class ConcreteClass implements Interface1, Interface2 {
  int declareConcreteImplementMultipleField = 0;
  abstract int declareAbstractImplementMultipleField;
}

abstract class AbstractClass implements Interface1, Interface2 {
  int declareConcreteImplementMultipleField = 0;
  abstract int declareAbstractImplementMultipleField;
}

class ConcreteSub extends AbstractClass {}

main() {}