import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        int n = sc.nextInt();
        int digit;

        digit = n % 10;

        if (digit == 2 | digit == 4 | digit == 5 | digit == 7 | digit == 9){
            System.out.println("hon");;

        } else if (digit == 0 | digit == 1 | digit == 6 | digit == 8){
            System.out.println("pon");

        } else if (digit == 3){
            System.out.println("bon");

        }else{
            
        }
    }
}
/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