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