import java.util.*;

class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.next();
        
        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");
        }

    }
}
