using System;

using System.Linq;

using System.Collections.Generic;

using System.Text.RegularExpressions;

​

public class Program

{

    public static void Main()

    {

            string str = "you androids don't exactly cover for each other in times of stress. i think youre right it would seem we lack a specific talent you humans " +

                "possess i believe it's called empathy";

            //var sList = new List<string> { "for each other", "talent", "you humans" };

            var sList = new List<string> { "for each other", "other in", "talent", "you humans", "you" };

​

            List<string> parts = new List<string> { str };

​

​

            foreach (var seperator in sList)

            {

                if (!sList.Any(word => word != seperator && word.Contains(seperator)))

                {

                    parts = parts.SelectMany(part => Regex.Match(part, "(.*) ?(\\b" + seperator + "\\b) ?(.*)|(.+)")

                            .Groups

                            .Cast<Group>()

                            .Where(group => group.Success)

                            .Select(group => group.Value)

                            .Skip(1))

                        .ToList();

                }

                // For seperators which are fully contained within other seperators eg. 'you'

                else

                {

                    List<string> newParts = new List<string>();

                    foreach (var part in parts)

                    {

                        if (sList.Contains(part))

                        {

                            newParts.AddRange(Regex.Match(part, "(?:.*) ?(\\b" + seperator + "\\b) ?(?:.*)")

                                .Groups

                                .Cast<Group>()

                                .Where(group => group.Success)

                                .Select(group => group.Value)

                                .Skip(1));

                            newParts.Add(part);

                        }

                        else

                        {

                            newParts

                                .AddRange(Regex.Match(part, "(.*) ?(\\b" + seperator + "\\b) ?(.*)|(.+)")

                                    .Groups

                                    .Cast<Group>()

                                    .Where(group => group.Success)

                                    .Select(group => group.Value)

                                    .Skip(1));

                        }

                    }

                    parts = newParts;

                }

            }

​

            parts = parts

                .Where(x => !string.IsNullOrWhiteSpace(x))

                .ToList();

​

            parts.ForEach(part => Console.WriteLine(part));

    }

}