Today's standard ... just two words to go to fill in all the common ones. Sigh.
In the meantime, in the desperation of the wee hours, I started just dropping random combinations of letters in for a laugh, hoping I'd stumble upon the missing two common words, and ended up adding 10 new rare words to my list that I didn't know the existence of before today.
You'll probably hear the screams across trans-continental distances when I finally find out what the missing common words are.