#include <bits/stdc++.h>
using namespace std;
int main() {
  int N;
  cin >> N;
  int length = to_string(N).length();
  for (int i = 0; i < length; i++) {
    N /= 10;
  }
  if (N == 2 && N == 4 && N == 5 && N == 7 && N == 9) {
    cout << "hon"
         << "\n";
  } else if (N == 0 && N == 1 && N == 6 && N == 8) {
    cout << "pon"
         << "\n";
  } else {
    cout << "bon"
         << "\n";
  }
}
