using System;

using System.Text.RegularExpressions;

using System.Text;

public class Program

{

    public static void Main()

    {

        string text=@" ⏩ മരണം << രണ്ടാം പാപ്പാനായ >> - -മകന്റെ -കൺമുന്നിൽ ’’";

        var x=RemoveSpecialCharacters(text);

        Console.WriteLine(x);

        //Console.WriteLine(text);

    }

    private static string RemoveSpecialCharacters(string str)

    {

        //var reg=@"[^\u0900-\u0dff]";

        string removableChars = Regex.Escape(@"^\u0900-\u0dff^\u0000-\u00ff");

        string pattern = "[" + removableChars + "]";

        return Regex.Replace(str, pattern, "", RegexOptions.Compiled);

    }

}