#include<iostream>
using namespace std;
int main(){
	int x, m;
	cin>>x;
	m=x%10;
	if(m==2||m==4||m==5||m==7||m==9)
	cout<<"hon";
	else if(m==0||m==1||m==6||m==8)
	cout<<"pon";
	else if(m==3)
	cout<<"bon";
}  