import java.util.*;

public class Main{
	public static void main(String args[]){
      Scanner sc = new Scanner(System.in);
      String books = sc.next();
      char x = books.charAt(books.length()-1);
      switch(x){
        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;
        default:
          System.out.println("bon");
          break;        
      }     
    }
} import java.util.*; util.* java public class Main{
	public static void main(String args[]){
      Scanner sc = new Scanner(System.in);
      String books = sc.next();
      char x = books.charAt(books.length()-1);
      switch(x){
        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;
        default:
          System.out.println("bon");
          break;        
      }     
    }
} Main public static void main(String args[]){
      Scanner sc = new Scanner(System.in);
      String books = sc.next();
      char x = books.charAt(books.length()-1);
      switch(x){
        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;
        default:
          System.out.println("bon");
          break;        
      }     
    } main {
      Scanner sc = new Scanner(System.in);
      String books = sc.next();
      char x = books.charAt(books.length()-1);
      switch(x){
        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;
        default:
          System.out.println("bon");
          break;        
      }     
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String books = sc.next(); books sc.next() sc.next sc char x = books.charAt(books.length()-1); x books.charAt(books.length()-1) books.charAt books books.length()-1 books.length() books.length books 1 switch(x){
        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;
        default:
          System.out.println("bon");
          break;        
      } x case '2': '2' case '2': case '4': '4' case '4': case '5': '5' case '5': case '7': '7' case '7': case '9': '9' case '9': System.out.println("hon") System.out.println System.out System System.out "hon" break; case '0': '0' case '0': case '1': '1' case '1': case '6': '6' case '6': case '8': '8' case '8': System.out.println("pon") System.out.println System.out System System.out "pon" break; default: default: System.out.println("bon") System.out.println System.out System System.out "bon" break; String args[] args public class Main{
	public static void main(String args[]){
      Scanner sc = new Scanner(System.in);
      String books = sc.next();
      char x = books.charAt(books.length()-1);
      switch(x){
        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;
        default:
          System.out.println("bon");
          break;        
      }     
    }
} public class Main{
	public static void main(String args[]){
      Scanner sc = new Scanner(System.in);
      String books = sc.next();
      char x = books.charAt(books.length()-1);
      switch(x){
        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;
        default:
          System.out.println("bon");
          break;        
      }     
    }
} Main
import java.util.*;

public class Main{
	public static void main(String args[]){
      Scanner sc = new Scanner(System.in);
      String books = sc.next();
      char x = books.charAt(books.length()-1);
      switch(x){
        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;
        default:
          System.out.println("bon");
          break;        
      }     
    }
}