import java.util.*;
import java.lang.*;
import java.util.regex.Pattern;
import java.util.regex.Matcher;
class Main
{
{
String test
= "=?ISO-2022-JP?B?GyRCRZi?= =?ISO-2022-JP?B?QDg7OlWiE8?= =?ISO-2022-JP?B?JTkkT=?= =?ISO-2022-JP?B?kjaHaA?="; String out
= test.
replaceAll("([^=])\\?= =\\?ISO-2022-JP\\?B\\?",
"$1"); System.
out.
println("OutPut: "+out
); }
}
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