public class hourglass {
	public static void main(String[] args) {
		int spaces = 0;
		int start = 15;
		int stars = start;
		for (int one = start; one > 0; one--) {
			if (one > start/2)
				spaces = start - one;
			else
				spaces--;
			for (int two = spaces; two > 0; two--)
			System.out.print(" ");
			for (int three = stars; three > 0; three--)
			System.out.print("*");
			if (one > start/2 + 1)
				stars = stars - 2;
			else
				stars = stars + 2;
			System.out.println();
		}
	}
}