#include <stdio.h>

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