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