#include<iostream>
#include<string>

using namespace std;

int main(){
    string input;
    cin >> input;
    for(int i=0;i<input.size();i++){
        if(input[i]=='t'){
            if(input.substr(i,7)=="treeone"){
                cout<<"forest";
                i+=6;
                continue;
            }
        }
        cout<<input[i];
    }
    cout<<"\n";
    return 0;
}