mport java.util.*;
public class Main {
	public static void main(String[] args){
      Scanner sc=new Scanner(System.in);
      int a =sc.nextInt();
      int d=a%10;
      if((d==2)||(d==4)||(d==5)||(d==9)||(d==7))
        System.out.println("hon");
      if(d==3)
        System.out.println("pon");
      else
        System.out.println("bon");
    }
}  
        
      
        