using System;

using System.Collections.Concurrent;

using System.Collections.Generic;

using System.Linq;

using System.Text.RegularExpressions;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

        var appIds = new List<string>(){

            "& Outfit Planner - Free!,3.1.2,com.stylitics.app",

             "and Market Data Analysis,19018,com.dowjones.Barrons.ipad",

             "and notes, organized in a notebook,2015000,com.microsoft.onenote",

             "and notes, organized in a notebook,2017002,com.microsoft.onenote",

             "and Recipes from Kitchens within a Sustainable Food Network,7.0.1,com.1368135328.5161368135328",

             "and watch live sports,2124,com.espn.ScoreCenter",

             "Annotate PDF and Present,7.0.7,com.zoom-notes.zoomnotes"

        };

        foreach(var id in appIds){

            var cleanId = "";

            var match = Regex.Match(id, @"(\w+\.\w+\.\w+)$");

            if(match.Success){

                cleanId = match.Value;

            }

            Console.WriteLine(cleanId);

        }

    }

}