(let [x {:a         1
         :b         2
         :c         3
         :d         4
         ::s/a 5
         ::s/b 6
         ::s/c 7
         ::s/d 8
         "a"        9
         "b"        10
         "c"        11
         "d"        12
         'a         13
         'b         14
         'c         15
         'd         16}
      {:keys         [a]
       :strs         [b]
       :syms         [c]
       ::s/keys [d]} x]
  (prn [:a a])
  (prn [:b b])
  (prn [:c c])
  (prn [:d d])
  (prn d))

(let [x {:as [::s/j ::s/b]}
      ;; voce tem que descobrir o x
      {} x]
  (prn [:não-pode-printar-nil j b]))