class Series {
         public static void main(String args[]) throws Exception {      

         BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

         System.out.println("enter number in between 5 to 9");
         Integer num=Integer.parseInt(br.readLine());

                for(int i=num;i>=1;i--) {
            for(int j=1;j<=i;j++)
            System.out.print(j+" ");
            System.out.print("  ");
        }

        for(int i=1;i<=num;i++)  {
            for(int j=1;j<=i;j++)
            System.out.print(j+" ");
            System.out.print("  ");
        }
        }

}