import java.util.Scanner;

public class Main {

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);

		int[] n = {1, 1, 0, 2, 0, 0, 1, 0, 1, 0};
		String a = sc.next();
		int b = Integer.parseInt(a.substring(a.length() - 1));

		System.out.println(n[b] == 0 ? "hon" : n[b] == 1 ? "pon" : "bon");
	}
}
/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz