I am very sorry but this is not a very clever wall. There is no logical connection to be found within a group. So they all add up to 28? You can only find those groups if you know up front that the numbers all add up to 28 because nothing else connects them. But even then it doesn't make sense because "Minus One" and "Rogue One" are both 1 so how is "Rogue", "Candles", "Brothers" and "Months" a tight group when "Rogue" could just as easily have been "Minus". I'm very sorry but this is not a good wall.

This grid doesn’t work in the usual sense - there isn’t a clear way to reach 28 upfront (unless you know all 16 and divide by 4, but that’s not how the format works).