Thread:User talk:CodeCat/Epenthetic -f- in PGmc

Kroonen lists a few examples,, , , , , of words that would eventually receive epenthetic -f- between nasal and fricative. He notes that this could have happened in Proto-Germanic already. Gothic does seem to have had the -f- in, but in another example, , does not.

Would we reconstruct them with or without the -f-?