import java.util.Scanner;

public class Main {

    public static void main(String args[]){
        Scanner scanner = new Scanner(System.in);
        String S = scanner.nextLine();
        char s = S.charAt(S.length() - 1);
        if (s == '2' || s == '4' || s == '5' || s == '7' || s == '9'){
            System.out.println("hon");
        } else if(s == '3'){
            System.out.println("bon");
        } else {
            System.out.println("pon");
        }

        scanner.close();
    }

}
/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