diamond

Sometimes, even more bored coders like to do really really boring things like outputting diamonds of asterisks. Beautiful, but lame. Hubert is one such lame lame coder.

Input

A number 0 < n ≤ 30 representing the maximum radius of the diamond.

Output

A diamond of asterisks with radius n. Note that the diamond is put into place via spaces in front. There are no spaces after each line.

Sample Input 1

4

Sample Output 1

   *
  ***
 *****
*******
 *****
  ***
   *