#include<iostream>
#include<string>
using namespace std;
int main(){
    string str;
    char s1[] = {'t','r','e','e','o','n','e'};
    string s2 = "forest";
    bool flag;
    cin >> str;
    for(int i=0;i<str.size();i++){
        flag = false;
        for(int j=0;j<7&&j+i<str.size();j++){
            if(str[i+j]!=s1[j])  break;
            if(j==6){
                cout << s2;
                i+=6;
                flag=true;
            }
        }
        if(i<str.size()&&flag!=true)    cout << str[i];
    }
    cout << endl;
    return 0;
}