I have read through about half of the posts in this discussion - interesting. Are there people out there that are still looking for GSAK help in determining how to create the grid that shows all of the 81 combinations and which ones you have found. If so, I can help with that. Actully a pretty easy macro.
By the way, my plan is to get four the remaining eight combinations that I need to fill ou the grid this coming weekend. It will involve a drive of 400 miles through three states. Can't wait.
I will be in Toronto this October and will forward to doing this cache.