not unique groups. You can swap options between groups, meaning you can't work it out by logic on your last 3 lives and need to take guesses.

Nice ideas, but you need to change most of the items in the groups for it to work. There are too many to mention that can be swapped between groups, and there's only meant to be one valid solution, otherwise to sort any of the groups, we're relying on pure luck or clairvoyance, rather than knowledge and logic.

You could swap Berry and/or Bird with Flag and/or Magic, likewise Hot and/or Eye with Dwarf and/or Wine. So not a valid grid.