//inlclude前用define 
#define _USE_MATH_DEFINES

//include
#include<iostream>
#include<string>
#include<algorithm>
#include<vector>
#include<cmath>

using namespace std;
//typedef
typedef vector<int> VI;
typedef vector<string> VS;
typedef vector<char> VC;

int main() {
	string s,tree="treeone";
	cin >> s;
	size_t pos = s.find(tree);
	while (pos != string::npos) {
		s.replace(pos, tree.size(), "forest");
		pos = s.find(tree, pos + 6);
	}
	cout << s << endl;
	return 0;
}