int main()
{
  	int N;
  	std::cin >> N;
 
  	N = N % 10;
  	if (N == 2 || N == 4 || N == 5 || N == 7 || N == 9)
      printf("hon");
  	else if (N == 0 || N == 1 || N = 6 || N == 8)
      printf("pon");
  	else if (N == 3)
      printf("bon");
}