#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 jdIdx = 0;

  for(int i=0; i<sLen;++i){
    if(s[i] == 't'){
      for(int j=1;j<7;++j){
        if(s[i+j]==judge[j]){
          jdIdx++;
          if(jdIdx+1 == 7){
            s = s.replace(i, 7, re);
            jdIdx = 0;
            i = i+5;
            sLen--;
          }
        }else{
          jdIdx = 0;
          break;
        }
      }
    }
  }
  cout << s << endl;

  return 0;
}