a=int(input())
b=2*a-1
for x in range(1,b+1):
    if x==1:
        print(' '*(a-1)+'*')
    elif x>1 and x<=a:
        print(' '*(a-x)+'*'+' '*((x-1)*2-1)+'*')
    elif x>a and x<=b-1:
        print(' '*(x-a)+'*'+' '*((b-x)*2-1)+'*')
    else:
        print(' '*(a-1)+'*')

#include <stdio.h>

int main()
{
    int n;
    scanf ("%d",&n);
    for (int i=0;i<n;i++)
    {
        for (int j=1;j<=2*n-1;j++)
        {
            if (j==n-i||j==n+i)
            {
                printf("*");
            }
            else
            {
                printf(" ");
            }
        }
        printf ("\n");
    }
    for (int i=n-2;i>=0;i--)
    {
        for (int j=1;j<=2*n-1;j++)
        {
            if (j==n-i||j==n+i)
            {
                printf("*");
            }
            else
            {
                printf(" ");
            }
        }
        printf ("\n");
    }
    return 0;
}