code: def form_adverb_from_adjective(adjective):
      
  
      # If the adjective ends in -able, -ible, or -le, replace the -e with -y
      if adjective.endswith("able") or adjective.endswith("ible") or adjective.endswith("le"):
          return adjective[:-1] + "y"
  
      # If the adjective ends in -y, replace the y with i and add -ly
      elif adjective.endswith("y"):
          return adjective[:-1] + "ily"
  
      # If the adjective ends in -ic, add -ally
      elif adjective.endswith("ic"):
          return adjective[:-2] + "ally"
  
      # In most cases, an adverb is formed by adding -ly to an adjective
      return adjective + "ly"
docs: Forms an adverb from the input adjective, f.ex. "happy" => "happily".
      Adverbs are generated using rules from: http://www.edufind.com/english-grammar/forming-adverbs-adjectives/
  
      :param adjective: adjective
      :return: adverb form of the input adjective