/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
import java.util.regex.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		String input = "HD47-4585-GG89-KO89-9089-RT45";
 
		Pattern id = Pattern.compile("(\\w{4}-\\w{4}-\\w{4})");
		Matcher matcher = id.matcher(input);
 
		List<String> ids = new ArrayList<>();
 
		while(matcher.find()) {
		    ids.add(matcher.group(1));
		}
 
		System.out.println(ids);
	}
}

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