import java.util.*;
public class Main {

  public static void main(String[] args) { 
      Scanner sc = new Scanner(System.in);
      int n = sc.nextInt() % 10;
      if(n == 3)
        System.out.println("bon");
      else if(n == 0 || n == 1 || n == 6 || n == 8)
        System.out.println("pon");
      else System.out.println("hon");
  }
}