Strangely enough, I refer to it all the time, because I have seen all the episodes (except those on the new CBS streaming services), but I am an oldish man with a young daughter, who asks me questions that are way beyond my memory.
Just out of curiosity, mizinamo, what motivated you to study Klingon if you're not a big Star Trek fan? (Assuming, of course, that I've gleaned that fact correctly from your statement that you haven't watched it much.) :-)
Actually, it is accepted. However, I see a report from almost exactly the same time as your comment that says, "Mara walk home from the Great Hall." I think you probably left off the "-ed" and that is why it was rejected.