using System;

using System.Collections.Generic;

using System.Linq;

public class Program

{

    public static void Main()

    {

    Func<string, List<int>> length = f => f.Split('.').Select(x=>x.Length).ToList();

            string inputStr = "aaaaa.bbbbbbbb.cccccc";

            Console.WriteLine(String.Join(",",length(inputStr)));

    }

}