import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner tan = new Scanner(System.in);
        int n,a=0;
        n = tan.nextInt();
        a=n%10;
        if(a==2 || a==4 || a==5 || a==7 || a==9)
            System.out.println("hon");
        else if(a==0 || a==1 || a==6 || a==8)
            System.out.println("pon");
        else if(a==3)
            System.out.println("bon");
    }
}

/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz