import java.util.regex.*;
import java.io.*;

public class CaptureTextInGroup{
	public static void main(String[] args) throws IOException{
		BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
		System.out.print("Enter text for finding groups of text: ");
		String inputStr = in.readLine();
		String patternStr = "(a(b*))+(c*)";
		
		// Compile and use regular expression
		Pattern pattern = Pattern.compile(patternStr);
		Matcher matcher = pattern.matcher(inputStr);
		boolean matchFound = matcher.find();
		
		if(matchFound){
			// Get all groups for this match
			for(int i=0; i<=matcher.groupCount(); i++){
				String groupStr = matcher.group(i);
				System.out.println(groupStr);
			}
		}
	}
}