#include<iostream>
#include<vector>
#include<algorithm>
#include<functional>
#include<queue>
#include<stack>
#include<set>
#include<climits>
#include<cstdlib>
#include<cmath>
#include<string>

using namespace std;

#define INF 1 << 29
#define LL long long int

LL const MOD = 1000000007;

int main(){
    cin.tie(0);
    ios::sync_with_stdio(false);

    string str;
    cin >> str;

    string s = "treeone";

    string ans = "";

    for(int i = 0; i < str.size(); i++){
        if(str.substr(i,s.size()) == s){
            ans += "forest";
            i += s.size() - 1;
        }else{
            ans += str[i];
        }
    }

    cout << ans << endl;
    
    return 0;
}