public abstract class NormalActor
{
public abstract NormalActor Clone();
}

public abstract class FlyActor
{
public abstract FlyActor Clone();
}

public abstract class WaterActor
{
public abstract WaterActor Clone();
}

[Serializable]
public class NormalActorA : NormalActor
{
public override NormalActor Clone()
    {
return (NormalActor)this.MemberwiseClone();
    }
}

[Serializable]
public class NormalActorB : NormalActor
{
public override NormalActor Clone()
    {
return (NormalActor)this.MemberwiseClone();
    }
}

[Serializable]
public class FlyActorA : FlyActor
{
public override FlyActor Clone()
    {
return (FlyActor)this.MemberwiseClone();
    }
}

[Serializable]
public class FlyActorB : FlyActor
{
public override FlyActor Clone()
    {
return (FlyActor)this.MemberwiseClone();
    }
}

[Serializable]
public class WaterActorA : WaterActor
{
public override WaterActor Clone()
    {
return (WaterActor)this.MemberwiseClone();
    }
}

[Serializable]
public class WaterActorB : WaterActor
{
public override WaterActor Clone()
    {
return (WaterActor)this.MemberwiseClone();
    }
}

public class GameSystem
{
public NormalActor normalActor;
public FlyActor flyActor;
public WaterActor waterActor;

public void Run()
    {
        NormalActor normalActor1 = normalActor.Clone();
        NormalActor normalActor2 = normalActor.Clone();
        NormalActor normalActor3 = normalActor.Clone();
        NormalActor normalActor4 = normalActor.Clone();
        NormalActor normalActor5 = normalActor.Clone();

        FlyActor flyActor1 = flyActor.Clone();
        FlyActor flyActor2 = flyActor.Clone();

        WaterActor waterActor1 = waterActor.Clone();
        WaterActor waterActor2 = waterActor.Clone();
    }
}
class App
{
public static void Main()
    {
        GameSystem gameSystem = new GameSystem();
        gameSystem.normalActor = new NormalActorA();
        gameSystem.flyActor = new FlyActorB();
        gameSystem.waterActor = new WaterActorB();

        gameSystem.Run();
    }
}