<s>[INST] W.D. Gann reportedly taught that the Square of Nine was a magical device that could be used to determine major market tops and bottoms, as well as when to buy and sell individual stocks. This device started with a square, 9x9 grid, and then became a circular, spiral like pattern. Simply stated, the Square of Nine relates each number in a grid to the next and the previous number. So a number is connected to its previous number through the angle of a square and to its next number through a 90 degree angle of a circle.[/INST]