revert(비교)

		r2 vs r7
1		K~~nBi~~3~~KUl~~WseY~~7ADH~~h~~Lp/1bT6He~~D~~1Vq~~O~~uVPH~~sSY~~5dw6~~9~~nycG0e3~~Q~~1THhf++XQv+xv~~
	1	sKeuajw9u3eRuCWn9amoSASOBx2ebYZUhDEIO3qp44skuNi11YSP8IJrKVX9AUQO