import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		String[] num = sc.nextLine().split("", 0);



		switch(num[num.length - 1]) {
		case "2":
		case "4":
		case "5":
		case "7":
		case "9":
			System.out.println("hon");
			break;
		case "0":
		case "1":
		case "6":
		case "8":
			System.out.println("pon");
			break;
		case "3":
			System.out.println("bon");
			break;
		}

	}
}
/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