public unsafe static string[] PreProcessBook(string Input, int *MaximumLength)
        {
            *MaximumLength = 0;

            HashSet<string> Output = new HashSet<string>();
            StringBuilder builder = new StringBuilder(50);
            foreach (char c in Input)
            {
                if (c == '\r' || c == '\n' || c == ' ')
                {
                    string Word = builder.ToString();
                    if (Word.Length > 0)
                    {
                        Output.Add(Word);
                        if (Word.Length > *MaximumLength)
                            *MaximumLength = Word.Length;
                    }
                    builder.Clear();
                }
                else if (c >= 'A' && c <= 'Z' || c == 'Ä' || c == 'Ö' || c == 'Å')
                {
                    builder.Append((char)(c + 32));
                }
                else
                {
                    builder.Append(c);
                }
            }
            return Output.ToArray();
        }