import java.util.Scanner;
  
public class diamond_pattern
{            
    public static void main(String[] args) {
        Scanner sc=new Scanner(System.in);
        System.out.println("Enter number of rows");
        int n = sc.nextInt();
        System.out.println("Enter number of colums");
        int m = sc.nextInt();
        
        for (int i = 1; i <= n; i++)
        {
            //n = 4;
   
            for (int j = 1; j<= n - i; j++) { System.out.print(" "); } for (int k = i; k >= 1; k--)
            {
                System.out.print(k);
            }
            for (int l = 2; l <= i; l++) { System.out.print(l); } System.out.println(); } for (int i = 3; i >= 1; i--)
        {
             n = 3;
   
            for (int j = 0; j<= n - i; j++) { System.out.print(" "); } for (int k = i; k >= 1; k--)
            {
                System.out.print(k);
            }
            for (int l = 2; l <= i; l++)
            {
                System.out.print(l);
            }
   
            System.out.println();
        }
       
    }
}