Even if you know the answer, it is still helpful that you try your best figuring out why wrong answer choices are wrong when you reuse, this is what I think. However, @7sagelsatstudent180, do you save the last 4 or 5 PT for final prep?
If you're looking to reuse the ones you currently own for retakes, why not just make copies or create the PDF's yourself? I make copies of the LG section before I take any test, so I can use it for drilling later.
Use a chart for grouping games when you can reuse the items that can be placed in groups. For example, if there are 3 shirts (this represents groups) and they can be made up of different colors (Y, G, B ). You would use a chart here.