#include <bits/stdc++.h>
#define INF 990000000
//24
using namespace std;

int main() {
string s;
cin>>s;
string target = "treeone";     // 検索文字列
string replacement = "forest"; // 置換文字列
if (!target.empty()) {
  string::size_type pos = 0;
  while ((pos = s.find(target, pos)) != string::npos) {
    s.replace(pos, target.length(), replacement);
    pos += replacement.length();
  }
}
cout << s<<endl;





}