//=================================
// Created on: 2018/08/24 21:19:19
//=================================
#include <bits/stdc++.h>
#define show(x) std::cerr << #x << " = " << x << std::endl
using ll = long long;
using ull = unsigned long long;
using ld = long double;
constexpr ll MOD = 1000000007LL;
template <typename T>
constexpr T INF = std::numeric_limits<T>::max() / 10;
std::mt19937 mt{std::random_device{}()};
int main()
{
    std::string s;
    std::cin >> s;
    std::string target = "treeone";      // 検索文字列
    std::string replacement = "forest";  // 置換文字列
    if (!target.empty()) {
        std::string::size_type pos = 0;
        while ((pos = s.find(target, pos)) != std::string::npos) {
            s.replace(pos, target.length(), replacement);
            pos += replacement.length();
        }
    }
    std::cout << s << std::endl;
    return 0;
}