#include<iostream>
using namespace std;

void main(){
	int n;
	cin >> n;

	switch(n % 10){
	case 2:
	case 4:
	case 5:
	case 7:
	case 9:
		cout << "hon" << endl;
		break;

	case 0:
	case 1:
	case 6:
	case 8:
		cout << "pon" << endl;
		break;

	case 3:
		cout << "bon" << endl;
		break;
	}
	
}