#include <bits/stdc++.h>
using namespace std;
 
int main() {
  string s, from = "treeone", to = "forest";
  cin >> s;
  size_t pos = s.find(from);
  while(pos != string::npos) {
    s.replace(pos, from.size(), to);
    pos = s.find(from, pos + to.size());
  }
  cout << s << endl;
  return 0;
}