/* https://www.youtube.com/watch?v=dQw4w9WgXcQ thanks for coming. -bedirhan */
#include <bits\stdc++.h>
using namespace std;
int main()
{
    int n;
    cin >> n;
    if (10 <= n < 100)
    {
        n = n % 10;
    }
    else if (100 <= n < 1000)
    {
        n = (n % 100) % 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";
    }
}
