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

int main(){
    string s, from = "treeone", to = "forest";
    cin >> s;
    assert(1 <= s.size() && s.size() <= 100);
    for(int i = 0; i < s.size(); i++){
        assert('a' <= s[i] && s[i] <= 'z');
    }
    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;
}