#include<iostream>
#include<string>

using namespace std;

int main() {

	string str, forest = "forest",treeone="treeone";
	string substr;

	cin >> str;
	int start = 0;

	while (true) {
		int index = str.find(treeone, start);
		if (index == -1)break;
		str.erase(index, treeone.size());
		str.insert(index, forest);
		start = index + forest.size();
	}

	cout << str << endl;

	return 0;
}