import java.util.*;

 
public class Main {
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        String num = scan.nextLine();
        scan.close();
        
        switch (num.charAt(num.length()-1)) {
            case '2':
            case '4':
            case '5':
            case '7':
            case '9':
                System.out.println("hon");                
                break;
        
            case '0':
            case '1':
            case '6':
            case '8':
                System.out.println("pon");
                break;
            
            case '3':
                System.out.println("bon");
                break;

            default:
                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