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

int main() {
	string S, T = "";
	cin >> S;
	for (int i = 0; i < S.size(); i++) {
		if (S.substr(i, 7) == "treeone") T = T + "forest", i+=6;
		else T = T + S[i];
	}
	cout << T << endl;
}