import java.util.Scanner;

public class Main{
  public static void main(String[] args){

   Scanner sc = new Scanner(System.in);

   int N = sc.nextInt();

   N = (N / 1);
   N = N % 10;
   
   if((N == 2) || (N == 4) || (N == 5) || (N == 7) || (N == 9)){
     System.out.println("hon");
   }else if((N == 0) || (N == 1) || (N == 6) || (N == 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