import java.util.*;

public class Main {
	public static String word = "treeone";

	public static void main(String args[]) {
		Scanner scan = new Scanner(System.in);

		String n = scan.hasNextLine() ? scan.nextLine() : null;
		
		// 小文字のみ
		String regex_Alphabet = "^[a-z]+$";

		if (n.length() > 100 || n.length() < 1 || !n.matches(regex_Alphabet)) {
			System.out.println("入力エラー1");
			return;
		}
		
		String ans  = n.replace(word,"forest");

		// 結果出力
		System.out.println(ans);

	}
}