import java.util.*;
public class Main {
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
    	int N = sc.nextInt();

      	int a = N % 10;
        if(a == 3){
            System.out.println("bon");
        }else if(a == 0 || a == 1 || a == 6 || a == 8){
            System.out.println("pon");
        }else {
            System.out.println("hon");
        }
    }
}