import java.util.*;
public class Main {
public static void main(String args[]) {
// Your Code Here
Scanner sc = new Scanner(System.in);
int n = sc.nextInt();
int nst = n;
int row = 1;
while(row<=n){
int cst=1;
while(cst<=nst){
if(row==1||row==n){
System.out.print("* ");
}
else if(row==n/2+1){
if(cst==1||cst==nst){
System.out.print("* ");
}
else{
System.out.print(" ");
}
}
else{
if(cst==nst/2+1){
System.out.print(" ");
}else{
System.out.print("* ");
}
}
cst++;
}
System.out.println();
row++;
}
}
}