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);
	}
}