
You start using the left lever (Blue). This should make three red balls come down from the left, then all eight balls from the right side, and finally the remaining five blue balls from the left side. On the virtual Turing Tumble, you cannot have blue balls on the red start and red balls on the blue start, even though it requires that in the instructions. If you try this setup in the actual set you will get BBBBBBBBRRRRRRRR (Read from right to left), which is the correct answer.