//For fast competitive programming

//INCLUDE
#include <bits/stdc++.h>
using namespace std;

//DATA_TYPES
typedef long long ll; 
typedef vector<int> vi;
typedef pair<int, int> ii; 
typedef vector<ii> vii;
const int INF = 0x3f3f3f3f; //Infinity

//INITIALISING
//memset(arr, 0, sizeof arr);
//vi v(N, 0);

int main()
{
	std::ios_base::sync_with_stdio(0);
	std::cin.tie(NULL);
	
	//write your code here
	int n;
	cin>>n;
    if ((n%10)==2)||(n%10)==4)||(n%10)==5)||(n%10)==7)||(n%10)==9))
	cout<<"hon";
	else if ((n%10)==0)||(n%10)==1)||(n%10)==6)||(n%10)==8))
	{
	    cout<<"pon";
	}
	else
	cout<<"bon";
	return 0;
}