using System;

class Ans{
	string n = Console.ReadLine();
  	string str;
  	switch(n[-1]) {
      case "2":
      case "4":
      case "5":
      case "7":
      case "9":
        str = "hon";
        break;
      case "0":
      case "1":
      case "6":
      case "8":
        str = "pon";
        break;
      case "3":
        str = "bon";
        break;
      default:
        break;
    }
	Console.WriteLine(str);
}