I'm looking at the instances of αλλα in the Apostolic Fathers. One very peculiar set of instances (seven instances in two verses) occurs in Hermas, Visions I.iii.1-2. (watch out, I may blog about it later to work though some thoughts)
Of course, I'm using the Logos version of Holmes (2nd edition). So, while in Vis. I.iii.1, I right-click and do a "Search for References to Herm., Vis I, iii, 1". One tiny little right-click.
Across my library, 148 instances of references to the verse (including ranges that include the verse) in 15 books. Books like:
How cool is that?