#include<iostream>
#include<string>
#include<vector>
#include<algorithm>
#include<map>
#define all(x) x.begin(),x.end()
#define pb push_back
#define ll long long 
#define P pair<int,int>
#define LP pair<ll,ll>
using namespace std;
int main() {
	string s;
	cin >> s;
	if (s.length() > 6) {
		for (int i = 0; i < s.length() - 6; i++) {
			if (s.substr(i,7)=="treeone") {
				s = s.substr(0, i) + "forest" + s.substr(i + 7, s.length() - i - 7);
				i += 5;
			}
		}
	}
	cout << s << endl;
	return 0;
}