#include <iostream>
#include <vector>
#include <string>
using namespace std;
 
int main (){
	vector<string>X;
    X[0] ='pon';
  	X[1] ='pon';
  	X[2] ='hon';
    X[3] ='bon';
 	X[4] ='hon';
	X[5] ='hon';
    X[6] ='pon';
    X[7] ='hon';
    X[8] ='pon';
    X[9] ='hon';
  	int Y;
  	cin >> Y;
    int S = Y%10;
  	cout << X[S] <<endl;
}