Honestly, I don't know off the top of my head. It's all muscle memory in my fingers -- I know which buttons to use together to purify, Leech etc, I know which ones are aoe heals, which one is the SS. When I got my new laptop, I had a very hard time assigning my skills, and had to learn from playing the game when my fingers would reach to do something only to learn that I hadn't assigned that keybind yet.