VP
Size: a a a
VP
MP
DF
DF
DF
MP
OR
concat
DF
(def dummy-2d-arr (->> [:some-kw] (repeat 5000) vec))
(take 3 dummy-2d-arr)
(set (reduce concat nil (take 2000 dummy-2d-arr)))
(set (reduce concat nil (take 4000 dummy-2d-arr)))
(set (mapcat identity dummy-2d-arr))
OR
OR
A
DF
DF
DF
OR
DF
AL
AL
AL