#include <bits/stdc++.h>
using namespace std;

typedef pair<int,int> P;
bool cmp(P a,P b){
  return a.first*b.second>a.second*b.first;
}

signed main(){
  string s;cin>>s;s+="####################";
  for(int i=0;i<s.size()-10;i++){
    if(s[i]=='#')break;
    if(s.substr(i,7)=="treeone"){cout<<"forest";i+=6;}
    else cout<<s[i];
  }
  cout<<endl;
}