String Manipulation

using System;

namespace StringManipulation
{
    class Program
    {
        static void Main(string[] args)
        {
            string removeWord = Console.ReadLine();
            string text = Console.ReadLine();

            int index = text.IndexOf(removeWord);

            while(index != -1)
            {
                text = text.Remove(index, removeWord.Length);
                index = text.IndexOf(removeWord);
            }

            Console.WriteLine(text);
        }
    }
}