#include <bits/stdc++.h>
using namespace std;
int main(){

  int n;
  cin>>n;
  vector<string> s[10];
   s[0]="pon"
   s[1]="pon"
   s[2]="hon"
   s[3]="bon"
   s[4]="hon"
   s[5]="hon"
   s[6]="pon"
   s[7]="hon"
   s[8]="pon"
   s[9]="hon"
     cout<<s[n%10]<<endl;
}