#include <iostream>
using namespace std;

int main() {
  int input;
  cin >> input
  
  switch(input % 10) {
  case 2:
  case 4:
  case 5:
  case 7:
  case 9:
    printf("hon");
  case 0:
  case 1:
  case 6:
  case 8:
	printf("pon");
  case 3:
    printf("bon");
  }
  
  return 0;
}