#include "bits/stdc++.h"
using namespace std;
typedef long long ll;
#define rep(i,n) for(int i=0;i<(int)(n);i++)
int gcd(int a,int b){return b?gcd(b,a%b):a;}

int main() {
    cin.tie(0);
    ios::sync_with_stdio(false);
    string s;
    int n;
    cin >> s;
    n=-6;
    while ((n=(int)s.find("treeone",n+6))>=0) s.replace(n,7,"forest");
    cout << s << endl;
    return 0;
}