import java.util.Scanner;

public class therefore {
    public static void main(String[] args){
        Scanner scanner = new Scanner(System.in);
        int n = scanner.nextInt();
        int first = n % 10;
        switch(first){
            case 0:
                System.out.println("pon");
                break;
            case 1:
                System.out.println("pon");
                break;
            case 2:
                System.out.println("hon");
                break;
            case 3:
                System.out.println("bon");
                break;
            case 4:
                System.out.println("hon");
                break;
            case 5:
                System.out.println("hon");
                break;
            case 6:
                System.out.println("pon");
                break;
            case 7:
                System.out.println("hon");
                break;
            case 8:
                System.out.println("pon");
                break;
            case 9:
                System.out.println("hon");
                break;
            default:
                break;
        }
    }
}
