import java.util.*;
public class Main {
	public static void main(String[] args){
    	Scanner sc = new Scanner (System.in);
    	int N = sc.nextInt();
    	switch (int N%10){
      		case 2:
      		case 4:
      		case 5:
      		case 7:
      		case 9:   
      			System.out.println("hon");
      			break;
      		case 0:
      		case 1:
      		case 6:
      		case 8:
        		System.out.println("pon");
        		break;
      		case 3:
        		System.out.println("bon");
            	break;
        }
    }
}