import java.util.Scanner;

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