using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text.RegularExpressions;
 
public class Test
{
	public static void Main()
	{
		var block = @"[-+]?\d+#(?:[-+]?\d*\.?\d+|~)";   // Block/unit pattern
    	var pattern = $@"(?<=^(?:{block},\s)*){block}(?=(?:,\s{block})*$)";
    	//Console.WriteLine(pattern);
    	var results1 = Regex.Matches("3#0.01, 2#0.5, 1#-10, -2#~", pattern)
    		.Cast<Match>().Select(x => x.Value);
        if (results1.Count() > 0)
        	Console.WriteLine(string.Join(", ", results1));
        var results2 = Regex.Matches("MISTAKE3#0.01, 2#0.5, 1#-10, -2#~AND_HERE_MISTAKE_TOO", pattern)
        	.Cast<Match>().Select(x => x.Value);
        if (results2.Count() > 0)
        	Console.WriteLine(string.Join(", ", results2));
	}
}

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