public class dd{
    public static void main(String[] args) {
        for (int i=1; i<16; i += 1)
        {
        	for (int k=0; k <= (i/2); k++)
       		{
            	System.out.print(" ");
        	}
	        for (int j=0; j!=i; j++)
    	    {
        	    System.out.print("*");
        	}
        	System.out.println("");
        }
        for (int i=1; i<16; i += 2)
        {
            for (int k=0; k <= (6-i/2); k++)
            {
                System.out.print(" ");
            }

            for (int j=16; j!=i; j--)
            {
                System.out.print("*");
            }
            System.out.println("");
        }
    }
}