import java.util.Scanner;

public class ccc01j1 {
	public static void main(String[] args) {
		//https://dmoj.ca/problem/ccc01j1
		//		input N as int
		//		output N *
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		for (int c=1; c<=N; c=c+2) {
			//c stars
			for (int i=0; i<c; i++) {
				System.out.print("*");
			}
			//2*N-2*c spaces
			for (int i=0; i<2*N-2*c; i++) {
				System.out.print(" ");
			}
			//c stars
			for (int i=0; i<c; i++) {
				System.out.print("*");
			}
			System.out.println();
		}
		for (int c=N-2; c>=1; c=c-2) {
			//c stars
			for (int i=0; i<c; i++) {
				System.out.print("*");
			}
			//2*N-2*c spaces
			for (int i=0; i<2*N-2*c; i++) {
				System.out.print(" ");
			}
			//c stars
			for (int i=0; i<c; i++) {
				System.out.print("*");
			}
			System.out.println();
		}
	}
//	*        *   1   8   1    2*5-1*2
//	***    ***   3   4   3    2*5-3*2
//	**********   5   0   5    2*5-5*2
}