#include<bits/stdc++.h>
using namespace std;
int main(){
    string s,t="treeone",u="forest";
    cin>>s;
    auto pos=s.find(t);
    while(pos!=string::npos){
        s.replace(pos,t.size(),u);
        pos=s.find(t,pos+u.size());
    }
    cout<<s<<endl;
}