The thought was to allow for as many 6-character combinations as possible. Using the alphabet along with numbers offered 2,176,782,336 combinations whereas numbers alone would only offer 1,000,000 (zero-base). However,...
Great job, Jan-155192. I'm going to modify to include numerics; ie. 'AAAAAZ' will increment to 'AAAAA0' and 'AAAAA9' would increment to 'AAAABA'. I'll update the post after I'm done for...