Example

using System;
using System.Collections.Generic;
using System.Text.RegularExpressions;

public class Example
{
    public static void Main()
    {
        string input = Console.ReadLine();
        string pattern = @"(\W+)((\w+)-\3)(\W+)";
        var didimon = new List<Group>();
        var bojomon = new List<Group>();

        var regex1 = Regex.Matches(input, pattern);

        foreach (Match m in Regex.Matches(input, pattern))
        {
            bojomon.Add(m.Groups[2]);
            didimon.Add(m.Groups[1]);
            didimon.Add(m.Groups[4]);
        }

    }
}