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

int main()
{
	string S;
	cin >> S;

	string s = "treeone";
	string t = "forest";
	string ans;
	for( int i = 0; i < S.size(); i++ ) {
		if( S.substr( i, s.size() ) == s ) {
			ans += t;
			i +=  s.size() - 1;
		}
		else ans += S[i];
	}

	cout << ans << endl;
}