(defun a (b c)
  (let
    (
      (d "i am a string
do not break me!")
      (
  ; comment: 0
        (f)
; comment : 1
        `(g )); comment " : " 2
      (
        (h (I am in brackets:
           do not : change "me"))
        i)))
  ,('j k)

  l

; comment

  (a c))

(defun b (:n o)
  "second defun : with a docstring!"
  (message "I am here")
  t)

(defun c (e f)
  ((g))
  (
    (h
      (i))
    (j))
  '(())
  (k)
  l
  (m))

(defun _ (:)
  
   :)

(_ b)

(defun d ()
      (let 
          ((a b)
            (c d))))

(a (((c))))

(let 
    ((a b)
      (c)))

(let ((a b)))

a