#include<iostream>
#include<string>
using namespace std;

int main(){
    string s;
    cin >> s;

    string::size_type pos = 0;
    while((pos = s.find("treeone")) != string::npos){
        s.replace(pos, 7, "forest");
        pos += 6;
    }

    cout << s << endl;

    return 0;
}