#include <iostream>

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