#include<iostream>
#include<vector>
#include<string>
using namespace std;

int main()
{
    int n;
    cin >> n;
    const char* hon = "hon";
    const char* pon = "pon";
    const char* bon = "bon";
    switch (n%10)
    {
    case 2:
    case 4:
    case 5:
    case 7:
    case 9:
        cout << hon << endl;
        break;
    case 0:
    case 1:
    case 6:
    case 8:
        cout << pon << endl;
        break;
    case 3:
        cout << bon << endl;
        break;
    }
    return 0;