#include <iostream>
#include <string>

using namespace std;

int main() {
  string s;
  cin >> s;
  string befo = "treeone";
  int pos;
  int len = befo.length();
  while ((pos = s.find(befo)) != -1) {
    s.replace(pos, len, "forest");
  }
  cout << s << endl;

  return 0;
}