Ãâó : https://blogattach.naver.net/da4fc67567373ee2ce2b49784da3dba00551af4e9a/20191026_144_blogfile/gabgol_1572095108394_oPx6c4_pdf/3.%2B%BE%C8%C0%FC%B0%FC%B8%AE%B0%E8%C8%B9%BC%AD%2B%C8%BF%C0%B2%C0%FB%2B%C0%DB%BC%BA%2B%B9%D7%2B%C8%B0%BF%EB%B9%E6%BE%C8%28%B0%C7%BC%B3%B1%E2%BC%FA%C1%F8%C8%EF%B9%FD%C0%BB%2B%C1%DF%BD%C9%C0%B8%B7%CE%29.pdf