import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String[] array = sc.next().split("");

        List<String> res = new ArrayList<>();
        List<String> target = new ArrayList<>();
        for (String str : array) {
            target.add(str);
            if (target.size() == 7) {
                if (String.join("", target).equals("treeone")) {
                    str = "forest";
                }
            }
            res.add(str);
            target.clear();
        }
        System.out.println(String.join("", res));
    }
}