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