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;
  }