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