public static string[] RemoveFromArrayDistinct(string phrase)
		{
			char[] delimiterChars = { ' ', ',', '.', ':', ';', '!', '?', '\"', '\t', '\n' };
			string[] words = phrase.ToLower().Split(delimiterChars, StringSplitOptions.RemoveEmptyEntries);
			Array.Sort(words);
			return words.Distinct().ToArray();
		}