#include <bits/stdc++.h>
using namespace std;
int main() {
  int n;
  cin >> n;
  string pre;
  string suff = "on";
  int rem = 0;
  while (n) {
    rem = n % 10;
    n /= 10;
  }
  if (rem == 2 or rem == 4 or rem == 5 or rem == 7 or rem == 9)
    pre = "h";
  else if (rem == 0 or rem == 1 or rem == 6 or rem == 8)
    pre = "p";
  else
    pre = "b";
  cout << pre + suff << endl;
}
