#include <stdio.h>

int main(void){
  int num;

  scanf("%d", &num);

  switch(num % 10){
    case 0:
      printf("pon");
      break;
    case 1:
      printf("pon");
      break;
    case 2:
      printf("hon");
      break;
    case 3:
      printf("bon");
      break;
    case 4:
      printf("hon");
      break;
    case 5:
      printf("hon");
      break;
    case 6:
      printf("pon");
      break;
    case 7:
      printf("hon");
      break;
    case 8:
      printf("pon");
      break;
    case 9:
      printf("hon");
      break;
  }
}
