revert(비교)

		r4 vs r6
1		~~c8u4~~q~~PYz~~Z3Q~~TIJIZV~~nKgDbq~~Ao/AssnLt~~JR~~mTS~~3~~7gd~~lu3Y4~~Irt024XLJdpXwWdrK7~~
	1	S0QqUCphiiZ4QnVlzwSTTztAkKJlsdXH/o7mvgvmqrJROu2Rxi/ilz3Sl/wfue4b