public class Main {
	public static void main(String[] args) {
		 Scanner sc = new Scanner(System.in);
			String A = sc.nextLine();
	        char B = A.charAt(A.length() -1);

	        if(B == '3') {
	        	System.out.println("bon");
	        }else if(B=='0'|B=='1'|B=='6'|B=='8'){
	        	System.out.println("pon");
	        }else {
	        	System.out.println("hon");
		 }
		}
		

	}
