#include <iostream>
#include <string>

using namespace std;

int main() {
    string s;
    const string from = "treeone";
    const string to = "forest";
    cin >> s;
    string::size_type pos = 0;
    while ((pos = s.find(from, pos)) != string::npos) {
        s.replace(pos, from.length(), to);
        pos += from.length();
    }
    cout << s << endl;
    return 0;
}