import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		// TODO 自動生成されたメソッド・スタブ
		Scanner stdIn = new Scanner(System.in);
		int n = stdIn.nextInt();
		int n1 = n / 100;
		n = n -  n1 * 100;
		int n2 = n / 10;
		n = n - n2 * 10;
		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");
		}

	}

}
/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