#include<iostream>
#include<string>

int main() {
  std::string S;
  std::cin >> S;
  
  for(int i = 0; i < S.size(); i++) {
    if(S[i] == 't') {
      if(S.substr(i,7) == "treeone") {
        std::cout << "forest";
        i += 6;
        continue;
      }
    }
    std::cout << S[i];
  }
  std::cout << "\n";
  return 0;
}