import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();

		if(N%10 ==2 ||N%10 == 4 || N%10 == 5|| N%10 ==7 || N%10 == 9 ) {
			System.out.println("hon");
		}else if(N%10 == 0|| N%10 == 1|| N%10 == 6|| N%10 == 8){
			System.out.println("pon");
		}else if(N%10 == 3) {
			System.out.println("bon");
		}

	}

}
