import java.util.Scanner;
public class Main {

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

}