https://blog.faceutil.com/2020/06/30/%ec%97%90%eb%ae%ac-%ed%8c%8c%ec%9d%b4%eb%84%90%eb%b2%88%ec%95%8c%ed%8c%8c%ec%85%94%ed%94%8c-fba-shuffle-v2-2-1-%e3%89%b6/