I'll refer to the slots by color. There's a red, a red dot (that's the red slot with the blue dot on the rim), and a red inner (that's the empty slot above the red dot slot), as well as the center slot (that's the empty slot in the center of the wheel). I'll also refer to the letters by their Greek names: X=chi, E=epsilon, circle with a line through it = phi, A=alpha, and backwards 3=sigma.