import java.util.Scanner;
public class Main
{
	public static void main(String[] args)
	{
	   Scanner sc = new Scanner(System.in);
       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
         System.out.println("bon");
	}
}

/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz