using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

        ISome[] list = new ISome[] { 

            new Good { Name = "Hello" }, new Thing { Name = "World" },

            new Last { Name = "OH" }, new Forever { Name = "HAI" }, new Ever { Name = "DER!" }, 

        };

        foreach(var item in list) {

            item.Name.Dump();

        }

    }

    interface ISome

    {

        string Name { get; set; }

    }

    class Good : ISome

    {

        public string Name { get; set; }

    }

    class Thing : ISome

    {

        public virtual string Name { get; set; }        

    }

    class Last : ISome

    {

        public string Name { get; set; }        

    }

    class Forever : Last

    {

        public virtual string Name { get; set; }        

    }

    class Ever : Last

    {

        public string Name { get; set; }        

    }

}