import java.util.Scanner;
public class Main{
public static void main(String[] args){
	Scanner scan  = new Scanner(System.in);
	int n;
  	swith(n%10){
      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;
    }
  return 0;