/* 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 = "Episode_NN 3_CD was_XX awesome_XX";
        final Pattern ruleOne = Pattern.compile("\\w*_NNS?\\b|\\w*_CD\\b");
        Matcher matcher = ruleOne.matcher(input);
 
        List<String> ent = new ArrayList<String>();
 
        while (matcher.find()) {
          ent.add(matcher.group());
       }
       String[] arr = new String[ent.size()];
       arr = ent.toArray(arr);
       System.out.println(Arrays.toString(arr));
    }
}

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