StringBuilder text = new StringBuilder();
            int ind = 0;
            int ind1 = 0;
            string word;
            string word1;
            for (int i = ind; i < words1.Count; i++)
            {
                if(words2.Contains(words1[i]))
                {
                    word = words1[i];
                    ind = words1.IndexOf(word);
                    for (int j = ind1; j < words2.Count; j++)
                    {
                        if(words1.Contains(words2[j]) && words2[j] != word)
                        {

                            word1 = words2[j];
                            ind1 = words2.IndexOf(word1);
                            break;
                        }
                        else
                        {
                            if(words2[j] != word)
                            text.AppendLine(words2[j]);
                        }
                    }
                }
                else
                {
                    text.AppendLine(words1[i]);
                }
            }
            string allText = text.ToString();
            File.WriteAllText(fout, allText);