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

int main() {
  string N;
  cin>>N;
  
  int x=N.size();
    
  if(x==1){
    if(N=="3")
      cout<<"bon"<<endl;
    else if(N=="0"||N=="1"||N=="6"||N=="8")
      cout<<"pon"<<endl;
    else
      cout<<"hon"<<endl;
  }
  
  if(x==2){
    string s = N.at(1);
    if(s=="3")
      cout<<"bon"<<endl;
    else if(s=="0"||s=="1"||s=="6"||s=="8")
      cout<<"pon"<<endl;
    else
      cout<<"hon"<<endl;
  }
  
  if(x==3){
    string t = N.at(2);
    if(t=="3")
      cout<<"bon"<<endl;
    else if(t=="0"||t=="1"||t=="6"||t=="8")
      cout<<"pon"<<endl;
    else
      cout<<"hon"<<endl;
  }
    
}
