Thoughts on [m, g] as [in, ain]? (Stolfi)

[MarcoP]

Also, do I understand correctly that IN-groups would come out on top in both cases if they are considered as a whole?

That's what I understand as well. About 20% of the occurrences of final -g are of the forms -ag -aig -aiig, resulting in matches with -ain -aiin words.