there's this thing called "ledsagemåde" case ("contemporative/infinitivus/applicatus/gerundium" case) which had a complicated explanation, it was something like "active participle OR 'for someone/something' OR 'in parts' OR..."

i figured out, or at least i think i've figured out, that actually it's just 2 words put together: the normal word "and" paired with the normal "location/time" case and possibly a personal ending. i have to learn more greenlandic and test it on more sentences but the one i saw was this:

Hans'i allap'po'q Piitar'li atuar'luni (=luni being the case i'm talking about)
= Hans(i) write-verb-it Piita(q)-but read-(ledsagemåde)
= Hans writes/is writing but Piitaq reads/is reading

But:
lu = and (=automatically pointing to that we're talking about more than 1 thing)
ni = 1. locations/times, 2. its own

So theoretically:
"Hans writes but (also/and) Piitaq's (situation/status is) reading"

Qasu'llu'nga angerlar'pu'nga
"tire-(ledsagemåde-I) return-verb-I
"tiring, I went home"

here we have "lu (and) + nga (I)". "Tired and I, I went home".

(Ua)nga qimm'eq taku'llugu-lu qimaa'vu'nga
I dog view-(ledsagemåde-it)-and ran-away-verb-I
"I, seeing it the dog, and I ran away" = as soon as I saw the dog I ran away

I have to think / research about this more, and it's hard to describe in english but it makes sense to me anyway, it feels like just a small jump from "I and-that-situation" to "I -ing". the problem is not all the forms match up and stuff, but i think it clearly has this same "lu = and" in it, so i want to figure out what is it really... i have to keep learning and find more example sentences with translations and stuff.

speaking of, if you ever want to get me a present, go find harry potter in greenlandic OTL. people have it but they're like 15-year-olds who want to collect "every HP language ever" and it just sits on their bookshelves collecting dust. i just want to try reading it, i in no way need to own it, so if i can OCR someone's copy of the book for example...