#include<iostream>
int main(void)
{
  short n;
  cin >> n;
  
  short t = n%10;
  
  switch(t)
  {
    case 2:
    case 4:
    case 5:
    case 7:
    case 9: cout <<"hon"; break;
    case 0:
    case 1:
    case 6:
    case 8: cout <<"pon"; break;
    case 3: cout <<"bon"; break;   
  }
  
  return 0;  
}