/* -*- coding: utf-8 -*-
 *
 * 725.cc:  No.725 木は明らかに森である - yukicoder
 */

#include<cstdio>
#include<cstdlib>
#include<cstring>
#include<cmath>
#include<iostream>
#include<string>
#include<vector>
#include<map>
#include<set>
#include<stack>
#include<list>
#include<queue>
#include<deque>
#include<algorithm>
#include<numeric>
#include<utility>
#include<complex>
#include<functional>
 
using namespace std;

/* constant */

const string SPT("treeone");
const string DPT("forest");
const int SN = SPT.size(), DN = DPT.size();

/* typedef */

/* global variables */

/* subroutines */

/* main */

int main() {
  string s;
  cin >> s;
  int n = s.size();

  for (int i = 0; i < n;) {
    bool match = false;
    if (i + SN <= n) {
      match = true;
      for (int j = 0; match && j < SN; j++) match = (s[i + j] == SPT[j]);
    }

    if (match) {
      for (int j = 0; j < DN; j++) putchar(DPT[j]);
      i += SN;
    }
    else
      putchar(s[i++]);
  }
  putchar('\n');

  return 0;
}