import java.util.Scanner
public class Main
{
	public static void main(String[] args)
	{
	   Scanner sc = new Scanner;
       int a = sc.nextInt(); 
       int r = a % 10;
       if(r == 2 || r == 4 || r == 5 || r == 7 || r == 9)
         System.out.println("hon");
       else if(r == 0 || r == 1 || r == 6 || r == 8)
         System.out.println("pon");
       else(r == 3)
         System.out.println("bon");
	}
}