#include<bits/stdc++.h>
using namespace std;
int main()
{
    int n;
    cin>>n;
    n=n%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";
        }
        
    }
    
}