#include <bits/stdc++.h>
using namespace std;
#ifdef LOCAL
  #include "settings/debug.cpp"
  #define _GLIBCXX_DEBUG
#else
  #define Debug(...) void(0)
#endif
#define rep(i, n) for (int i = 0; i < (n); ++i)
using ll = long long;
using ull = unsigned long long;

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