using System;

using System.Collections.Generic;

using MoreLinq;

using System.Linq;

​

namespace SubsetExample

{

    class Program

    {

        static void Main(string[] args)

        {

            var list = new List<char> { 'a', 'b', 'c'};

            var list2 = new List<char> { 'd', 'e', 'f' };

            var list3 = new List<char> { 'g', 'h', 'i' };

            Console.WriteLine(string.Join(',', list.Interleave(list2, list3)));

​

        }

    }

}

​