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

int main() {
	const string tree = "treeone";
	const string forest = "forest";
	string s; cin >> s;
	string ans;
	for(int i = 0; i < s.size();) {
		if(s.substr(i, tree.size()) == tree) {
			ans += forest;
			i += tree.size();
		} else {
			ans += s[i];
			i++;
		}
	}
	cout << ans << '\n';
	return 0;
}