import java.util.*;
import java.lang.*;
import java.io.*;
import java.util.regex.*;
 
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		String content = "aba(2)bb(52)gc(4)d(2)fe(14)f(6)g(8)h(4)5(6)";
		Pattern pattern = Pattern.compile("[a-g](?:\\(\\d+\\))?");
		List<String> res = new ArrayList<>();
		Matcher matcher = pattern.matcher(content);
		while (matcher.find()){
			res.add(matcher.group(0)); 
		} 
		System.out.println(res);
	}
}

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