#include <stdio.h>
int main()
{
    int n = 0;
    while(scanf("%d",&n) != EOF)
    {
        for (int i = 0; i < n+1; i++)
        {
            for(int j = 0; j <n+1-i; j++)
            {
                printf("* ");
            }
            printf("\n");
        }
        for (int i = 0; i < n; i++ )
        {
            for(int j = 0; j < i+2; j++ )
            {
                printf("* ");
            }
            printf("\n");
        }        
    }
    return 0;
}