https://prezi.com/t7huktkl3fdu/introduction-to-regex/
https://prezi.com/v/se3qsxvypmes/how-would-aristotle-handle-presenting-on-a-video-call/
https://prezi.com/t7huktkl3fdu/introduction-to-regex/
https://prezi.com/v/se3qsxvypmes/how-would-aristotle-handle-presenting-on-a-video-call/
수정한 이유 :