revert(비교)

		r2 vs r4
1		~~KnBi~~3K~~UlWseY7A~~D~~HhLp/1~~b~~T6HeD1V~~q~~OuVPH~~sSY5d~~w69nycG0e~~3~~Q1THhf++~~X~~Qv+xv~~
	1	c8u4qPYzZ3QTIJIZVnKgDbqAo/AssnLtJRmTS37gdlu3Y4Irt024XLJdpXwWdrK7