using System;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

        var foos = new List<Foo>();

        var foo = new Foo();

        var c = 0;

        for(int i = 0; i < 10; i++) {

            Console.WriteLine(i);

            if (c < 2) {

                foo.Entries.Add($"{i}");

                c++;

            }

            else {

                foos.Add(foo);

                foo.Entries.Clear();

                foo.Entries.Add($"{i}");

                c=0;

            }

        }

        Console.WriteLine("\nResult:");

        // dump result

        foreach(var f in foos) {

            f.Dump();

        }

    }

    public class Foo {

        public List<string> Entries {get; set; } = new List<string>();

    }

}