import java.util.*;
public class Main {

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

}
