import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		switch (sc.nextInt() % 10) {
		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");
		}
	}

}
