import java.util.Scanner;

public class Main {
	public static void main(String[] args) throws Exception {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		sc.close();

		n %= 10;
		if (n == 3) {
			System.out.println("bon");
		} else if (n == 0 || n == 1 || n == 6 || n == 8) {
			System.out.println("pon");
		} else {
			System.out.println("hon");
		}
	}
}
