#include <iostream>
using namespace std;
int main(void){
    // Your code here!
    string s;
    cin>>s;
    for(int i=0;i<s.size();i++){
        if(s.substr(i,7)!="treeone"){
            cout<<s[i];
        }
        else{
            cout<<"forest";
            i+=6;
        }
    }
    cout<<endl;
}