#include <iostream>

using namespace std;

int main() {
    char S[200];
    char T[200];
    int state = 0;
    cin >> S;
    int ti = 0;
    for (int i=0; i<101; i++) {
        T[ti] = S[i];
        ti++;
        if (S[i] == 0) break;
        switch (S[i]) {
            case 't':
                state =1 ;
                break;
            case 'r':
                if (state == 1) state++;
                else state = 0;
                break;
            case 'e':
                if (state == 2 || state == 3) state++;
                else if (state == 6) {
                    T[ti-7] = 'f';
                    T[ti-6] = 'o';
                    T[ti-5] = 'r';
                    T[ti-4] = 'e';
                    T[ti-3] = 's';
                    T[ti-2] = 't';
                    ti = ti - 1;
                    state = 0;
                    break;
                } else {
                    state = 0;
                }
                break;
            case 'o':
                if (state == 4) state++;
                else state = 0;
                break;
            case 'n':
                if (state == 5) state++;
                else state = 0;
                break;
        }
    }
    cout << T << endl;
    return 0;
}