import java.util.Scanner;

class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		int n = N%10;
		if(n == 3) {
			System.out.println("bon");
	
		}else if(n==0 || n == 1 || n==6 || n == 8){
			System.out.println("pon");
		}else {
			System.out.println("hon");
		}

	}
}

