import java.util.Scanner;
public class Main {

	public static void main(String[] args) {
		Scanner in = new Scanner(System.in);
		
		int N = in.nextInt();
		N = 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");
		}
	}
}
