using System;
using System.IO;
using System.Text.RegularExpressions;
using System.Linq;
public class Test
{
	public static void Main()
	{
        var input = "StartTest\n  NoInclude\nEndTest\n\nStartTest\n  Include\nEndTest";
        var regex = new Regex(@"(?s)StartTest(?:(?!(?:Start|End)Test|NoInclude).)*EndTest");
        var results = regex.Matches(input).Cast<Match>()
                       .Select(p => p.Value)
                       .ToList();
        Console.WriteLine(string.Join("\n", results));
    }
}

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