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

int main(){
  int n;
  cin >> n;
  n = n%10;
  if(n == 3){cout << "bon" << endl;}
  else if(n == 0 ||n ==  1 || n == 6 || n == 8){
    cout << "pon" << endl;}
  else cout << "hon" << endl;}
}