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

int main()
{
	string s ,t;
	cin >> s;

	int l = 7;
	for (int i = 0; i < s.size(); i++) 
		if (s.substr(i, l) == "treeone") t += "forest", i += l - 1;
		else t += s[i];

	cout << t << endl;

	return 0;
}