using System;
using System.Text.RegularExpressions;
class Program {
static void Main()    {
string ourString = @"one-two-three:uno-dos-tres one-two-three:ichi-ni-san";
string ourPattern = @"(?:(?<someword>\w+)-?)+:(?:(?<someword>\w+)-?)+";
var ourRegex = new Regex(ourPattern);
MatchCollection AllMatches = ourRegex.Matches(ourString);

Console.WriteLine("**** Understanding Named Capture Reuse ****");
Console.WriteLine("\nOur string today is:" + ourString);
Console.WriteLine("Our regex today is:" + ourPattern);
Console.WriteLine("Number of Matches: " + AllMatches.Count);

Console.WriteLine("\n*** Let's Iterate Through the Matches ***");
int matchNum = 1;
foreach (Match SomeMatch in AllMatches)    {
    Console.WriteLine("Match number: " + matchNum++);
    Console.WriteLine("Overall Match: " + SomeMatch.Value);
    Console.WriteLine("\nNumber of Groups: " + SomeMatch.Groups.Count);
    Console.WriteLine("Why two Groups, not one? Because the overall match is Group 0");
    // Another way of printing the overall match
    Console.WriteLine("Groups[0].Value = " + SomeMatch.Groups[0].Value);
    Console.WriteLine(@"Since the 'someword' group appears more than once in the pattern, the value of Groups[1] and Groups[""someword""] is the last capture of each group");
    Console.WriteLine("Groups[1].Value = " + SomeMatch.Groups[1].Value);
    Console.WriteLine(@"Groups[""someword""].Value = " + SomeMatch.Groups["someword"].Value);
    // Let's look all the first captures manually
    Console.WriteLine("Someword Capture 0: " + SomeMatch.Groups["someword"].Captures[0].Value);

// Let's look at someword captures automatically
    int somewordCapCount = SomeMatch.Groups["someword"].Captures.Count;
    Console.WriteLine("Number of someword Captures: " + somewordCapCount);
    int i2 = 0;
    foreach (Capture someword in SomeMatch.Groups["someword"].Captures)    {
        Console.WriteLine("someword Capture " + i2 + ": " + someword.Value);
    i2++;
    } // end iterate G2 captures
    Console.WriteLine("\n");
} // end iterate matches

Console.WriteLine("\nPress Any Key to Exit.");
Console.ReadKey();

} // END Main
} // END Program