import java.util.regex.*;
import java.text.*;
 
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		String VIETNAMESE_DIACRITIC_CHARACTERS 
			= "ẮẰẲẴẶĂẤẦẨẪẬÂÁÀÃẢẠĐẾỀỂỄỆÊÉÈẺẼẸÍÌỈĨỊỐỒỔỖỘÔỚỜỞỠỢƠÓÒÕỎỌỨỪỬỮỰƯÚÙỦŨỤÝỲỶỸỴ";
		/*
		for (char c: VIETNAMESE_DIACRITIC_CHARACTERS.toCharArray()) {
			System.out.println(c + ": " + Character.getName(c));
		}
		*/
 
		String tests[] = new String[3];
		tests[0] = 
			"Bạn chính là tác giả của Wikipedia!\n" + 
			"Mọi người đều có thể biên tập bài ngay lập tức, chỉ cần nhớ vài quy tắc." +
			"Có sẵn rất nhiều trang trợ giúp như tạo bài, sửa bài hay tải ảnh." + 
			"Bạn cũng đừng ngại đặt câu hỏi.\n" +
			"Hiện chúng ta có 1.109.446 bài viết và 406.782 thành viên.";
 
		tests[1] =
			Normalizer.normalize(tests[0], Normalizer.Form.NFD);
		/*
		for (char c: tests[1].toCharArray()) {
			System.out.printf("%04x ", (int) c);
		}
		*/	
		tests[2] =
			Normalizer.normalize(tests[0], Normalizer.Form.NFC);
 
		try {
			Pattern p = Pattern.compile("(?:[" + VIETNAMESE_DIACRITIC_CHARACTERS + "]|[A-Z])++", Pattern.CANON_EQ | Pattern.CASE_INSENSITIVE | Pattern.UNICODE_CASE);
 
			for (String t: tests) {
				Matcher m = p.matcher(t);
				while (m.find()) {
					System.out.print(m.group() + " ");
				}
				System.out.println();
			}
		} catch (Exception e) {
			System.out.println(e);
		}
	}
}

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