using System;
using System.Text.RegularExpressions;
public class Test
{
public static void Main()
{
string s = "a b c d e f g h \t\t i";
var test = Regex.Split(s, @"\s{2,}");
Console.WriteLine(test[0]);
Console.WriteLine(test[1]);
Console.WriteLine(test[2]);
Console.WriteLine(test[3]);
}
}
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