#include <bits/stdc++.h>
using namespace std;

int main() {
  string s;
  cin >> s;
  int n = s.size();
  string ans = "";
  for (int i = 0; i < n; i++) {
    if (s.substr(i, 7) == "treeone"){
      ans += "forest";
      i += 6;
    }
    else {
      ans += s[i];
    }
  }
  cout << ans << endl;
  return 0;
}