#include <bits/stdc++.h>
using namespace std;
const string bf = "treeone";
const string af = "forest";

int main() {
    string s, t = "";
    cin >> s;
    const int n = s.length();
    
    for (int i = 0; i < n; i++) {
        if (s.substr(i, 7) == bf) {
            t += af;
            i += 6;
        } else {
            t += s[i];
        }
    }
    
    cout << t << endl;
    return 0;
}