using System;
using System.Collections.Generic;
using System.Text;
using System.Text.RegularExpressions;

namespace RegexTest
{
    class Program
    {
        static void Main(string[] args)
        {
            string Test1 = "Kov ács Lá szl ó";
            string Test2 = "Ád ámk a Ö dö n";
            string Test3 = "Sc hä ffer Brü n hil da Kl ár a";
            Console.WriteLine("Regex:");
            Console.WriteLine("{0} -> {1}", Test1, GetName(Test1));
            Console.WriteLine("{0} -> {1}", Test2, GetName(Test2));
            Console.WriteLine("{0} -> {1}", Test3, GetName(Test3));
            Console.ReadLine();
        }

        private static string GetName(string text)
        {
            string s = "";
            string rxNevCI = @"([\p{Lu}\p{Lt}\p{Lo}\p{Lm}][\p{Ll}\p{Lo}\p{Lm}\s']*[\p{Ll}\p{Lo}\p{Lm}'])";
            Regex rx = new Regex(rxNevCI, RegexOptions.CultureInvariant);
            MatchCollection mc = rx.Matches(text);
            foreach(Match m in mc)
                s += m.Value.Replace(" ", "") + " ";
            s = s.Trim();
            return s;
        }
    }
}