Error : vali / valī. Different corrections through the lesson.
I think you haven't got the full picture yet.
vali = nominative plural of vala
valī = can mean, for example, "and the men", since HV can use lengthening of the last vocal for expressing this "and", but it can also be the accusative plural of vala
Thank you very much for your explanation! I got it now ;-)
Came here for this! Thanks!