#include <iostream>
#include <string>
using namespace std;

int main(){
  int N,a;
  cin >> N;
  a = N%10;
  
  switch(a)
    case 2:
    case 4:
    case 5:
    case 7:
    case 9:
      cout << "hon";
    case 0:
    case 1:
    case 6:
    case 8:
      cout << "pon";
  break;
    case 3:
      cout << "bon";
  break;
}
  