#include <bits/stdc++.h>
using namespace std;
#define REP(i,a,n) for(int i=(a); i<(int)(n); i++)
#define rep(i,n) REP(i,0,n)
#define FOR(it,c) for(__typeof((c).begin()) it=(c).begin(); it!=(c).end(); ++it)
#define ALLOF(c) (c).begin(), (c).end()
typedef long long ll;
typedef unsigned long long ull;


int main(){
  string S;
  cin >> S;

  while(true){
    auto pos = S.find("treeone");
    if(pos == string::npos) break;
    S = S.substr(0,pos) + "X" + S.substr(pos+7);
  }
  rep(i,S.size()){
    if(S[i] == 'X') cout << "forest";
    else cout << S[i];
  }
  cout << endl;
  return 0;
}