#include <iostream>
#include <string>

void solve() {
    std::string s;
    std::cin >> s;

    int i = 0;
    while (i < (int)s.length()) {
        if (s.substr(i, 7) == "treeone") {
            std::cout << "forest";
            i += 7;
        } else {
            std::cout << s[i];
            i += 1;
        }
    }

    std::cout << std::endl;
}

int main() {
    std::cin.tie(nullptr);
    std::ios::sync_with_stdio(false);

    solve();

    return 0;
}