/* For n =4 the output should be

*

* *

* * *

* * * *

* * *

* *

*

*/

import java.util.Scanner;

public class Solution {

public static void main(String[] args) {

Scanner s = new Scanner(System.in);

int n = s.nextInt();

for (int i = 1; i <= n; i++) {

for (int stars = 1; stars <= i; stars++) {

System.out.print("* ");

}

System.out.println();

}

for (int i = 1; i < n; i++) {

for (int stars = n - 1; stars >= i; stars--) {

System.out.print("* ");

}

System.out.println();

}

}

}