using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;
public class Test
{
public static void Main()
{
string exp1 = @"\d+G-\w{3}";
string s = "CN=314G-VK1,OU=Grupper,OU=314,OU=Skole,OU=03Skien,DC=login,DC=sk-asp,DC=no";
string z = Regex.Match(s, exp1)?.Value;
Console.WriteLine(z);
}
}
dXNpbmcgU3lzdGVtOwp1c2luZyBTeXN0ZW0uQ29sbGVjdGlvbnMuR2VuZXJpYzsKdXNpbmcgU3lzdGVtLkxpbnE7CnVzaW5nIFN5c3RlbS5UZXh0LlJlZ3VsYXJFeHByZXNzaW9uczsKCnB1YmxpYyBjbGFzcyBUZXN0CnsKCXB1YmxpYyBzdGF0aWMgdm9pZCBNYWluKCkKCXsKCQlzdHJpbmcgZXhwMSA9IEAiXGQrRy1cd3szfSI7CgkJc3RyaW5nIHMgPSAiQ049MzE0Ry1WSzEsT1U9R3J1cHBlcixPVT0zMTQsT1U9U2tvbGUsT1U9MDNTa2llbixEQz1sb2dpbixEQz1zay1hc3AsREM9bm8iOwoJCXN0cmluZyB6ID0gUmVnZXguTWF0Y2gocywgZXhwMSk/LlZhbHVlOwoJCUNvbnNvbGUuV3JpdGVMaW5lKHopOwoJfQp9