import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class MainClass {
static public final String poem = "PC Bird Cow Slow Doe Hole Joe\n"
+ "Shy Shift Sleep Do Down Doing.\n" + "Yes No How Whose\n";
public static void main(String[] args) {
Matcher m = Pattern.compile("(?m)(\\S+)\\s+((\\S+)\\s+(\\S+))$").matcher(poem);
while (m.find()) {
for (int j = 0; j <= m.groupCount(); j++)
System.out.print("[" + m.group(j) + "]");
System.out.println();
}
}
}
/**/
[Doe Hole Joe][Doe][Hole Joe][Hole][Joe]
[Do Down Doing.][Do][Down Doing.][Down][Doing.]
[No How Whose][No][How Whose][How][Whose]