#include <bits/stdc++.h>
using namespace std;

int main()
{
    string s ,t;
    cin >> s;

    int l = 7;
    for (int i = 0; i < s.size(); i++) {
        if (s.substr(i, l) == "treeone") {
            t += "forest";
            i += l - 1;
        }
        else {
            t += s[i];
        }
    }
    cout << t << endl;

    return 0;
}