import java.util.*;
public class Main{
    public static void main(String[] args){
        Scanner input=new Scanner(System.in);
        String N=input.next();
        int a=N.charAt(N.length()-1)-48;
        if(a==3){
        System.out.print("bon");
        }else if(a==0||a==1||a==6||a==8){
        System.out.print("pon");
        }else{
        System.out.print("hon");
        }
    }   
}
/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz