#include <bits/stdc++.h>
using namespace std;
int main() {
  int n;
  cin >> n;
  while (n > 10) {
    n %= 10;
  }
  string ans;
  switch (n) {
    case 2:
    case 4:
    case 5:
    case 7:
    case 9:
      ans = "hon";
      break;
    case 1:
    case 6:
    case 8:
      ans = "pon";
      break;
    case 3:
      ans = "bon";
      break;
  }
  cout << ans << endl;
}
