import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Scanner kb = new Scanner(System.in);
		String n = kb.next();
		char x = n.charAt(n.length()-1);
		if (x=='2' || x=='4' || x=='5' || x=='7' || x=='9') {
			System.out.println("hon");
		} else if (x=='0' || x=='1' || x=='6' || x=='8') {
			System.out.println("pon");
		} else {
			System.out.println("bon");
		}
		
		kb.close();
	}

}

/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