I'm not following your alphabetical idea, cockie. In alphabetical order I make the components of the 11squares -
5x (the 5 letter word)
3x (the 4 letter word)
3x (the 7 letter word)
There isn't a member of the 7 letter word in 27ac - but it does have thematic significance (the answer is hidden in the clue).
If you understand my groupings, ask again (but you've probably found it now).
I think you might be looking for the one 19ac (where only 3 letters are clued for a longer word)?