namespace exercises

{

 public class Program

    {

        public static void Main(string[] args)

        {

            System.Console.WriteLine("Name: JENIFER CARDENAS GOMEZ");

            System.Console.WriteLine(test("C Sharp"));

            System.Console.WriteLine(test("JS"));

            System.Console.WriteLine(test("a"));

            System.Console.ReadLine();

        }

        public static string test(string str)

        {

            return str.Length < 2 ? str : str.Substring(0, 2) + str.Substring(0, 2) + str.Substring(0, 2)  + str.Substring(0, 2);

        }

    }

}

​