#include<bits/stdc++.h>
using namespace std;
int main(){
  int a;
  cin>>a;
  switch(a%10){
    case 3:
      cout<<"bon"<<endl;
      break;
    case 0:
    case 1:
    case 6:
    case 8:
      cout<<"pon"<<endl;
      break;
    case 2:
    case 4:
    case 5:
    case 7:
    case 9:
      cout<<"hon"<<endl;
      break;
  }