https://jamboard.google.com/d/1MmKSqhD7K3UskumTLoqMTHeRN6gCAwlZ89wK_JCWDr0/edit?usp=sharing
20~24번용
https://jamboard.google.com/d/1lKUHm2epL_mbwG_6P2W8vYzXsZP7wLv7dT3o5ehw2NI/edit?usp=sharing
