After the mammoth spreadsheet of base words 2-6 I then did the same with the top 10000 sevens. Reduced the list by approximately 50%.
And now I am back to 8s. Hoping to get through the top 20000 before I depart for Singapore. I am over half way there. After whizzing through the top 5000 I am now doing batches of 500 from the starting points of 5001, 10001 and 15001 in rotation just to even the load.
The cardbox is coming back in to play with those I miss.