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