#include <bits/stdc++.h>
using namespace std;
int main() {
  int n;
  cin >> n;
  if (n >= 100) {
    n %= 100;
    if (n == 2 || n == 4 || n == 5 || n == 7 || n == 9)
      cout << "hon";
    else if (n == 0 || n == 1 || n == 6 || n == 8)
      cout << "pon";
    else
      cout << "bon";
  } else if (n >= 10) {
    n %= 10;
    if (n == 2 || n == 4 || n == 5 || n == 7 || n == 9)
      cout << "hon";
    else if (n == 0 || n == 1 || n == 6 || n == 8)
      cout << "pon";
    else
      cout << "bon";
  } else {
    if (n == 2 || n == 4 || n == 5 || n == 7 || n == 9)
      cout << "hon";
    else if (n == 0 || n == 1 || n == 6 || n == 8)
      cout << "pon";
    else
      cout << "bon";
  }
  return 0;
}
