#include <iostream>
using namespace std;

int main() {
    string s, from = "treeone", to = "forest";
    cin >> s;
    size_t pos = s.find(from);
    while (pos != string::npos) {
        s.replace(pos, from.size(), to);
        pos = s.find(from, pos + to.size());
    }
    cout << s << endl;
}