For years, when I sneezed, it was always three in number. Always. When I was stricken with Guillain-Barre and paralyzed for two months, after that I would sneeze twice and only twice. Now, I'm into another pattern, way more complicated. It consists of two elements: the sneeze itself, and also a kind of reverse sneeze in which I inhale air instead of exhale. The pattern is exactly the same every time, I think. I haven't transcribed it, but I will next time. There are about 5 out-sneezes and 2-3 in-sneezes. Never in my life would I have imagined that my sneezes would adhere to a set pattern, but, well, there ya go.