import java.util.*;
public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		String S =sc.next();
        String spt[] =S.split("");
        
        switch(spt[spt.length-1]){
            case "0":
                System.out.println("pon");
                break;
            case "1":
                System.out.println("pon");
                break;
            case "2":
                System.out.println("hon");
                break;
            case "3":
                System.out.println("bon");
                break;
            case "4":
                System.out.println("hon");
                break;
            case "5":
                System.out.println("hon");
                break;
            case "6":
                System.out.println("pon");
                break;
            case "7":
                System.out.println("hon");
                break;
            case "8":
                System.out.println("pon");
                break;
            case "9":
                System.out.println("hon");
                break;
                
            
        }
        
        
	}
}
/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