import java.util.Scanner;
public class Main {

	public static void main(String[] args) {
		Scanner stdIn = new Scanner(System.in);
		
		int n = stdIn.nextInt();
		
		int a = n % 10;
		
		if(a == 2 || a == 4 || a == 5 || a == 7 || a == 9) {
			System.out.println("hon");
		}else if(a == 0 || a == 1 || a == 6 || a == 8) {
			System.out.println("pon");
		}else {
			System.out.println("bon");
		}
		
		
	}

}
