Congratulations, Maggie. "6789" is, of course, the last number of its type we will see here until "12345".

Now, some would say that "7890" is next, but I say it doesn't qualify. I don't count "7, 8, 9, Zero". I count "7, 8, 9, Ten". If "7890" counts, then "8901" must count too and it obviously doesn't. It's on a par with playing Gin Rummy with "going around the corner" rules (playing J,K,Q,A,2). It's kid stuff. Grownups don't play that way.