using System;
using System.Text.RegularExpressions;
using System.Linq;
using System.Collections.Generic;
public class Test
{
	public static void Main()
	{
		var list = new List<string>() {"The quick brown [fox] jumps over the lazy dog]",
			"The quick brown [fox] jumps over the lazy [dog]",
			"The quick brown [fox jumps over the lazy [dog]"};
		list.ForEach(m => Console.WriteLine("\nMatch: " + Regex.Match(m, @"\[([^][]*)]").Value +
							"\nGroup 1: " + Regex.Match(m, @"\[([^][]*)]").Groups[1].Value));
	}
}

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