#include<bits/stdc++.h>
#define rep(i,a,b) for(int i=int(a);i<int(b);++i)
using namespace std;
typedef long long ll;
int INF = (1LL << 30) - 1;
int MOD = 1e9+7;
main(){
    string s,t = "treeone", u = "forest";
    cin >> s;
    rep(i,0,s.size() - t.size() + 1){
        if(s.substr(i,7) == t){
            s = s.substr(0,i) + u + s.substr(i+7);
            i += 5;
        }
    }
    cout << s << endl;
}