#include<iostream>
#include<string>
#include<algorithm>
#include<cctype>
#include<set>
#include<bitset>
#include<math.h>
#include<map>
#include<queue>
#include<iomanip>
using namespace std;

int main(){
    string s, t = "", key = "treeone";
    cin >> s;
    int p;
    for (int i = 0; i < s.size(); i++){
        if(s[i] != 't') t += s[i];
        else if (s.size() >= i+6 && s.substr(i, 7) == key){
            t += "forest";
            i += 6;
        } else t += 't'; 
    }
    cout << t << endl;
}