import java.util.*;
import java.lang.*;
import java.io.*;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
 
 
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		String regex = "\\bWARN\\h+.*(?:\\R(?!\\[C]).*)*";
		String string = "[C] L1250 WARN  k2 bw34 Flex - Sockets:<16>, ThreadsPerCore:<1>\n"
			 + "[C] L1250 WARN  For abcd (analytical and transactional workloads). For 12s Systems and above, should be\n"
			 + "                disabled.\n"
			 + "[C] L1250 INFO  For abcd (analytical workloads), Hyperthreading should be enabled , 8s, 12s, 14d, 34t\n"
			 + "                d above.\n"
			 + "[C] L1250 WARN  Intel's Hyperthreading on 18+ Socket system disabled. Should be disabled urgently\n"
			 + "                fix it!\n"
			 + "[C] L1300 OK    CPU governors set as recommended\n"
			 + "[C] L1250 WARN  Intel's Hyperthreading on 8+ Socket system disabled.";
 
		Pattern pattern = Pattern.compile(regex, Pattern.MULTILINE);
		Matcher matcher = pattern.matcher(string);
 
		while (matcher.find()) {
		    System.out.println(matcher.group(0));
		}
	}
}

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