#include<bits/stdc++.h>
using namespace std;
int main(){
	int n,r;
	cin>>n;
	r=n%10;
	if(r==2||r==4||r==5||r==7||r==9)
	cout<<"hon";
	if(r==0||r==1||r==6||r==8)
	cout<<"pon";
	if(r==3)
	cout<<"bon";
	return 0;
}