import java.util.*;
public class Main {
public static void main(String args[]) {
Scanner scn = new Scanner(System.in);
int n = scn.nextInt();
int row = n;
int col=n;
for(int i=0;i<n;i++){
System.out.println();
for(int j=0;j<n;j++){
if (i < row / 2)
{
// checking if j<col/2
if (j < col / 2)
{
// print '*' if j=0
if (j == 0)
System.out.print(" *");
// else print space
else
System.out.print(" "+ " ");
}
// check if j=col/2
else if (j == col / 2)
System.out.print(" *");
else
{
// if i=0 then first row
// will have '*'
if (i == 0)
System.out.print(" *");
}
}
else if (i == row / 2)
System.out.print(" *");
else
{
// middle column and last column
// will have '*' after i > row/2
if (j == col / 2 || j == col - 1)
System.out.print(" *");
// last row
else if (i == row - 1)
{
// last row will be have '*' if
// j <= col/2 or if it is last column
if (j <= col / 2 || j == col - 1)
System.out.print("* ");
else
System.out.print(" "+ " ");
}
else
System.out.print(" "+" ");
}
}
System.out.print("\n");
}
}
}