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

int main(void){
    int a;
    cin >> a;
    int b=0;
    for (int i = 10; i < 11; i++){
        b = a %10;
        a/=10;

    }
    if (b==2 || b ==4 || b==5 || b==7 || b==9)
    {
        cout << "hon" << endl;
    }else if(b==0 || b==1 ||b ==6 || b == 8){
        cout << "pon" << endl;
    }else if(b==3){
        cout << "bon" << endl;
    }
    
}