using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApp1
{
    class Program
    {
        private static int ans = 0;
        private static int[,] dp;
        private static int N;
        private static int K;
        static void Main(string[] args)
        {
            string input = Console.ReadLine();

            string ans = "";
            for (int i = 0; i < input.Length; i++)
            {
                if (input.Length >= i + 7)
                {
                    if (input.Substring(i, 7) == "treeone")
                    {
                        ans = ans + "forest";
                        i += 6;
                    }

                    else
                    {
                        ans = ans + input.Substring(i, 1);
                    }
                }
                else
                {
                    ans = ans + input.Substring(i, 1);
                }
            }
            //出力
            Console.WriteLine(ans);
        }
    }
}