import java.util.Scanner;
 
class ans
{
  public static void main(String[] args)
  {
      int n,u;
      Scanner sc = new Scanner(System.in);
      n = sc.nextInt();
      u = n%10;
    if(u == 2 ||u == 4 ||u == 5 ||u == 7 ||u == 9 )
    {
      System.out.println("hon");
    }
    if(u == 0 ||u == 1 ||u == 6 ||u == 8 )
    {
      System.out.println("pon");
    }
    if(u == 3)
    {
      System.out.println("bon");
    }
  }
}
  