They ask, every time, if all the letters on the belts were moved into boxes and the full boxes removed, what letters would you need to fill up the remaining boxes. So, as letters appeared on the belts, I would mentally keep track of what boxes would fill up. I actually kept whispering to myself what letters I would need (beyond what was on the belts) to fill up the boxes. Also, they ask which belts have the lowest or highest access line (there's a line across every belt that you must wait for the letter to cross before you can pick it up). At the beginning of each one I would use the fingers on my left hand to make the same shape as the lines, i.e. the fully extended finger was the highest line, the fully bent finger the lowest, etc. They also ask which one's going the fastest or slowest sometimes. That one I just memorized as best I could.
anic: Good luck everyone!!!