using System;               

public class Program

{

    public static void Main()

    {

        Console.Write("Input a string: ");

        String str = Console.ReadLine().ToLower();

        string[] words = str.Split(' ');

        str = "";

        foreach (string s in words) {

            if (!(s[0] == s[s.Length - 1])) {

                str = str+s+" ";

            }

        }

        Console.WriteLine("New string without words that started and ended on equals symbols: " + str);

    }

}