thing: First line up 1, 2, 3, and 4 at the top, then put 5, 9, and 13 to the side in order from smallest to biggest, and then arrange 6, 13 / 2 + .5, and 8 in chronological order right next to 5, and then finally arrange 10, 11, and 12 by 9 also in chronological order and 13, 14, and 15 should be correctly arranged. yes i did type all of that.