using System;
using System.Linq;
using System.Collections.Generic;

static class NagataKanaIsAGenius {
    public static void Main() {
        char[]s=Console.ReadLine().ToArray();
        int n=s.Length;
        List<char>ans=new List<char>();
        for(int i=0;i<n;){
            if(i<=n-7&&new String(s,i,7)=="treeone"){
                foreach(char c in "forest"){
                    ans.Add(c);
                }
                i+=7;
            }else{
                ans.Add(s[i]);
                i++;
            }
        }
        foreach(char c in ans){
            Console.Write(c);
        }
        Console.WriteLine("");
    }
}