using System;
using System.Collections.Generic;
using System.Text.RegularExpressions;
using System.Linq;
public class Test
{
public static void Main()
{
var pat = @"[\x0A\x0D\x09]";
var s = "1\r2\n3\t4";
var res = Regex.Replace(s, pat, " ");
Console.WriteLine(res);
}
}
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