#include<bits/stdc++.h>

using namespace std;
using ll = long long;


int main()
{
	string s; cin >> s;
	string t;
	int n = s.size();

	for(int i = 0; i < n; i++) {
		if(s.substr(i, 7) == "treeone") {
			t += "forest";
			i += 6;
		} else {
			t.push_back(s[i]);
		}
	}
	cout << t << endl;
}