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// strings/Groups.java
// (c)2021 MindView LLC: see Copyright.txt
// We make no guarantees that this code is fit for any purpose.
// Visit http://OnJava8.com for more book information.
import java.util.regex.*;
public class Groups {
public static final String POEM =
"Twas brillig, and the slithy toves\n" +
"Did gyre and gimble in the wabe.\n" +
"All mimsy were the borogoves,\n" +
"And the mome raths outgrabe.\n\n" +
"Beware the Jabberwock, my son,\n" +
"The jaws that bite, the claws that catch.\n" +
"Beware the Jubjub bird, and shun\n" +
"The frumious Bandersnatch.";
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