#include <bits/stdc++.h>
#define REP(i, n) for(int i = 0; i < n; i++)
#define REPR(i, n) for(int i = n; i >= 0; i--)
#define FOR(i, m, n) for(int i = m; i < n; i++)
#define INF 2e9
#define ALL(v) v.begin(), v.end()
using namespace std;
typedef long long ll;
int main()
{
    ios::sync_with_stdio(false);
    cin.tie(nullptr);

    string s;
    cin >> s;

    string s1 = "treeone";
    string s2 = "forest";

    int idx = s.find(s1);
    while(idx >= 0)
    {
        s.replace(idx, s1.size(), s2);
        idx = s.find(s1, idx + s2.size());
    }

    cout << s << endl;
}