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