In the Hanerot Halalu that we recite when lighting the Hanukkah candles, it says "anachnu madlikin." Why madlikin and not madlikim? Why is a final nun used and not a final mem? I have searched EVERYWHERE!
The ArtScroll Siddur indeed renders it as "אנחנו מדליקין", but I have two siddurim (both Nusach Sfard but I'd assume it would be the same in the Nusach Ashkenaz versions by the same publisher) which read "אנחנו מדליקים". Siddur Kol Yaakov HaChadash (Adir) and Siddur Tefillat Kol Peh (Eshkol) both have מדליקים instead of מדליקין.
Interestingly enough, the Chabad siddur has a different nusach altogether for הנרות הללו, and aside from the other changes and switches throughout the text, the beginning reads:
'הנרות הללו אנו מדליקין וגו
This beginning seems to be a bit more Aramaic to me, as אנו is used instead of אנחנו, so it matches the langer-nun in מדליקין a bit better.