#include <bits/stdc++.h>
#define rep(i,n) for (int i=0; i<(n); ++i)
using namespace std;
using ll=long long;
int main(){
    string s;
    cin>>s;
    rep(i,s.length()){
        string ss=s.substr(i,7);
        if(ss=="treeone"){
            cout<<"forest";
            i+=6;
        }
        else{
            cout<<s[i];
        }
    }
}