#include<iostream>
using namespace std;
int main()
{
  int n;
  cin>>n;
  int rem = n%10;
  n=rem;
  if (n==2 || n==4 || n==5 || n==7 || n==9)
    cout<<"hon";
  else if (n==0 || n==1 || n=6 || n=8)
    cout<<"pon";
  else if (n==3)
    cout<<"bon";
  return 0;
}
