#include <stdio.h>

int main(void)
{
  int n;
  scanf("%d", &n);
  switch(n){
  case 0:
    printf("pon\n");
    break;
  case 1:
    printf("pon\n");
    break;
  case 2:
    printf("hon\n");
    break;
  case 3:
    printf("bon\n");
    break;
  case 4:
    printf("hon\n");
    break;
  case 5:
    printf("hon\n");
    break;
  case 6:
    printf("pon\n");
    break;
  case 7:
    printf("hon\n");
    break;
  case 8:
    printf("pon\n");
    break;
  case 9:
    printf("hon\n");
    break;
  }
  return 0;
}
