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








