Ada.Matchers.BoWPoS.PosTagger.TagBlockQuotes C# (CSharp) Method

        private string TagBlockQuotes(string body)
        {
            var tagged = body;
            var m = blockQuote.Match(tagged);

            while (m.Success)
            {
                var quote = tagged.Substring(m.Index, m.Length);
                var lines = quote.Split('\n');

                tagged = tagged.Remove(m.Index, m.Length);

                if (lines.Length < 4)
                {
                    tagged = tagged.Insert(m.Index, " •BQS• ");
                }
                else if (lines.Length < 11)
                {
                    tagged = tagged.Insert(m.Index, " •BQM• ");
                }
                else
                {
                    tagged = tagged.Insert(m.Index, " •BQL• ");
                }

                m = blockQuote.Match(tagged);
            }

            return tagged;
        }