int main(void)
{
  int N;
  scanf("%d",&N);
  N=N%100;
  N=N%10;
   switch (N){
    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;
     case 0:
      printf("pon\n");
      break;  
   }
    return 0;
}