import java.util.*;

class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int a = sc.nextInt();
        int n = a % 10;

        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");
        }

    }
}

/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