using System;

public class Program

{

    public static void Main()

    {

        Console.Write("Input : ");

        string input = Console.ReadLine();

        string[] kalimat = input.Split(" ");

        for(int i = 0; i < kalimat.Length; i++)

        {

            string kata = kalimat[i];

            char[] arrKata = new char[kata.Length];

            for (int j = 0; j < kata.Length; j++)

                arrKata[j] = kata[j];

            for (int j = 0; j < arrKata.Length; j++)

            {

                if (j == 0 || j == (arrKata.Length - 1))

                {

                Console.Write(arrKata[j]);

                }

                else

                {

                    Console.Write("*");

                }

            }

            Console.Write(" ");

        }

    }

}