class Program
{
    static void Main(string[] args)
    {
        string input = Console.ReadLine()!;
        string output = "";
        string copy = "";

        if (input.Contains("treeone"))
        {
            foreach (char c in input)
            {
                copy += c;
                output += c;
                if (copy.Contains("treeone"))
                {
                    output = output.Remove(output.Length - 7, 7);
                    copy = copy.Remove(copy.Length - 7, 7);
                    output += "forest";
                }
            }
            Console.WriteLine(output);
        }
        else
        {
            Console.WriteLine(input);
        }
    }
}