- using System; 
- using System.IO; 
- using System.Text.RegularExpressions; 
-   
- public class Test 
- { 
- 	public static void Main() 
- 	{  
- 		var line = "splitstring"; 
-         var splts = Regex.Split(line, @"(?<=\G.{2})"); 
-         Console.WriteLine(string.Join("\n", splts)); 
- 	} 
- } 
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