class Main{
  public static void main(String[] args){
    
    if( N == 2 || N == 4 || N == 5 || N == 7|| N == 9){
      System.out.println("hon");
    } else if (N == 0 || N == 1 || N == 6 || N == 8){
      System.out.println("pon");
    } else {
      System.out.println("bon");
    }
  }
}
 