using System;

​

namespace ContainsIndex

{

    public class Program

    {

        public static void Main()

        {

            while (true)

            {

                Console.WriteLine("Ingresa la combinacion a buscar: ");

                string search = Console.ReadLine();

                string test = "fdsfdsfdsfdsfjhdskfhdsjkhfjkshaifhaiaushfuahfuiashdfiuhsdaiuhuicttfsdhjhfjsahfajscggfdsjhfjauishfasiuhfuaishfsducgghfdsaghipasgiyasgfyifscttfjhisdagifyiagfyiasttpfsdhagbfhsadfiyuafhbyiattpfshgaIYHFVGTDSAOFBASUYttpe";

                int stringIndex = 0;

                int a = test.ToLower().IndexOf(search.ToLower());

                while ((stringIndex = test.IndexOf(search)) != -1)

                {

                    test = test.Remove(stringIndex, search.Length);

                    Console.WriteLine("Coincidencia encontrada en "+stringIndex+ " hasta "+ stringIndex + search.Length);

                }

            }

        }

    }

}