#include <bits/stdc++.h>
using namespace std;
  
int main(){
  int n;
  cin >> n;
  int k = n % 10;
  if (k == 2 || k == 4 || k == 5 || k == 7 || k == 9){
    cout << "hon";
  } else if (k == 0 || k == 1 || k == 6 || k == 8){
  	cout << "pon";
  } else {
    cout << "bon";
}