#include <stdc++.h>
using namespace std;

int main(){
    int N;
    cin >> N;
    vector<int> number;
    while(N>0)
    {
        number.push_back(N%10);
        N/=10;
    }

    switch (number[0])
    {
    case 2: case 4: case 5: case 7: case 9:
        cout << "hon"<< "\n";
        break;
    case 0: case 1: case 6: case 8:
        cout << "pon"<< "\n";
        break;
    case 3:
        cout << "bon"<< "\n";
        break;
    default:
        break;
    }



}