https://blog.faceutil.com/2020/07/15/spell-%ec%9d%b8%ed%84%b0%eb%84%b7-%ed%8e%8c-%eb%b0%a9%ec%a7%80-%ed%95%b4%ec%a0%9c-%ed%94%84%eb%a1%9c%ea%b7%b8%eb%9e%a8-1-2-%eb%a7%88%ec%9a%b0%ec%8a%a4%ec%98%a4%eb%a5%b8%ec%aa%bd-%eb%b3%b5/