#include <iostream>
#include <string>

using namespace std;

int main()
{
  std::string s;
  cin >> s;
  int sLen = s.size();
  std::string judge = "treeone";
  std::string re = "forest";

  int record = -1;
  int jRecord = 0;
  int cLen = sLen;

  for(int i=0; i<sLen;++i){
    if(i > cLen){ break; }
    if(s[i] == judge[jRecord]){
      record = i;
      jRecord++;
      if(jRecord == 7){
        s = s.replace(record-jRecord+1, jRecord, re);
        cLen--;
        record = -1;
        jRecord = 0;
      }
    }else{
      record = -1;
      jRecord = 0;
    }
  }

  cout << s << "\n";

  return 0;
}