Edited to add: Please see the NEWER POST about WTW that has all this information + much, much more!
On the last Words Their Way post, Mrs. Ibarra commented:
I have a copy of this book, but our Reading program does word sorts and uses them as spelling words too. It teaches a 2-3 patterns at a time...ay and ai for example. Do you think I could combine the two? I haven't looked at the book in a while. I purchased it for a Graduate class, but really haven't looked at it since.