using System;
using System.Collections.Generic;
using System.Globalization;
using System.Text;
using System.Text.RegularExpressions;
using System.Reflection;
public class MainClass{
public static void Main(){
Regex r = new Regex(@"<([^>]+)>([^<]*)</(\1)>");
Match m = r.Match("<M>S</M>");
Console.WriteLine("Tag: {0}, InnerText: {1}", m.Groups[1].Value, m.Groups[2].Value);
}
}