()

# a
() # b

(
  # a

  # b
)

(1)

([1, 2, 3].foo.bar(4, 5, 6))

(
  [
    1,
    2, # 2
    3,
  ]
)

(
  1

  # 2
)

(((12345)))

(
  if true
    2
  end
)

!(
  aaaaaaaaaaaaaaaaaaaaaaaaaa? &&
    %w[bbbbbbbbb cccccccccccccc].include?(dddddddddddddddddddddddddddddd)
)