#define _USE_MATH_DEFINES

#include <iostream>		//cin, cout
#include <vector>		//vector
#include <algorithm>	//sort,min,max,count
#include <string>		//string,getline, to_string
#include <cstdlib>		//abs(int)
#include <utility>		//swap, pair
#include <tuple>        //tuple
#include <deque>		//deque
#include <climits>		//INT_MAX
#include <bitset>		//bitset
#include <cmath>		//sqrt, ceil. M_PI, pow, sin
#include <ios>			//fixed
#include <iomanip>		//setprecision
#include <sstream>		//stringstream
#include <numeric>		//gcd, assumlate
#include <random>		//randam_device
#include <limits>		//numeric_limits

using namespace std;
constexpr long long int D_MOD = 1000000007;

int main() {

	string S, T;
	cin >> S;

	while (S.find("treeone", 0) != -1) {
		S.replace(S.find("treeone", 0), 7, "0forest0");
	}

	for (unsigned int i = 0; i < S.size(); i++) {
		if (S.at(i) != '0') {
			T.push_back(S.at(i));
		}
	}

	cout << T << endl;

	return 0;

}