User blog comment:Bocaj910/Purpose/@comment-1773274-20101028000015

That's right.
 * 1) Dark & Light
 * 2) Water & Sky
 * 3) Land & Sea
 * Sun, Moon, Stars
 * 1) Birds & Animals
 * 2) People
 * 3) G-d has rested. We thank him for his hard work.