#include<iostream>
#include<set>

using namespace std;

int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    string str;
    cin >> str;
    string tree = "treeone";
    string fore = "forest";
    for (int i = 0; i < str.size(); ++i) {
        for (int j = 0; j < tree.size(); ++j) {
            if (str[i + j] != tree[j]) break;
            if (j == tree.size() - 1) {
                for (int k = 0; k < fore.size(); ++k) {
                    str[i + k] = fore[k];
                }
                for (auto k = fore.size(); k < tree.size(); ++k) {
                    str[i + k] = '7';
                }
            }
        }
    }
    for (int i = 0; i < str.size(); ++i) {
        if (str[i] == '7') continue;
        cout << str[i];
    }
    cout << endl;
}