#include <bits/stdc++.h>
using namespace std;
int main() {
  int a;
  cin >> a;
  for (int j = a - (a / 10) * 10; j < 10; j++)
    if (j == ((2 && 4) && (5 && 7)) && 9) {
      cout << "hon" << endl;
    } else if (j == ((0 && 1) && (6 && 8))) {
      cout << "pon" << endl;
    } else if (j == 3) {
      cout << "bon" << endl;
    }
}
