https://www.youtube.com/watch?v=jOoJq1rb9ek&t=6s
https://www.youtube.com/watch?v=G8zvAXMFYL8&t=27s
https://www.youtube.com/watch?v=GNWkZuj951g
https://www.youtube.com/watch?v=sB0zcm94U8E
https://www.youtube.com/watch?v=vozG9zfz7yw
https://www.youtube.com/watch?v=RqFQM3KfBZU
https://www.youtube.com/watch?v=QIrtLWlC0k8
뭐가이렇게 많어 어우...