import java.util.Scanner;

public class KabarrMokhak {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n, i, j;
        boolean flag;
        while (sc.hasNext()) {
            n = sc.nextInt();
            for (i = 0; i <= 2 * n; i++) {
                flag = true;
                for (j = 0; j <= 2 * n; j++) {
                    if (Math.abs(n - i) + Math.abs(n - j) > n - 1)
                        System.out.print(' ');
                    else {
                        if (flag)
                            System.out.print('*');
                        else
                            System.out.print(' ');
                        flag = !flag;
                    }
                }
                System.out.println();
            }
        }
        sc.close();
    }

}