import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
      Scanner sc = new Scanner(System.in);
      int a = sc.nextInt();
    
        switch (a % 10) { 
        case 0: System.out.println ("pon"); break;
        case 1: System.out.println ("hon"); 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;
        default: break;
		}
	}
}