using System;

using System.Linq;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

        //string dimensionString= "AE:800;LE:300;LC:200;PE:100;PF:500";

        string dimensionString= "LE:720;AF:540";//;PE:514";

        string model = "";

        string codes = "G19";//"U900006-720-514-299-00";

        if (!string.IsNullOrEmpty(model))

            codes = codes.Substring(0, codes.IndexOf(model) - 1);

        Console.WriteLine(codes);

        var dic = codes.Split('-');

        foreach (var item in dic)

        {

            Console.WriteLine(item);

        }

        if (!string.IsNullOrEmpty(model + dimensionString))

        {

            Console.WriteLine(model + dimensionString);         

        }

        if (!string.IsNullOrEmpty(dimensionString))

        {

            var dict = dimensionString.Split(';').Select(x => x.Split(':')).ToDictionary(x => x[0], x => x[1]);

            if (dict.ContainsKey("AE"))

                Console.WriteLine("Key:{0} Value:{1}", "AE", dict["AE"]);   

            if (dict.ContainsKey("LE"))

                Console.WriteLine("Key:{0} Value:{1}", "LE", dict["LE"]);   

            if (dict.ContainsKey("LC"))

                Console.WriteLine("Key:{0} Value:{1}", "LC", dict["LC"]);   

            if (dict.ContainsKey("PE"))

                Console.WriteLine("Key:{0} Value:{1}", "PE", dict["PE"]);   

            if (dict.ContainsKey("PF"))

                Console.WriteLine("Key:{0} Value:{1}", "PF", dict["PF"]);               

            codes = RemoveLastElement(dict, codes);

            /*foreach   (var item in dict)

            {

                Console.WriteLine("Key:{0} Value:{1}", item.Key, item.Value);   

            }*/

        }

        Console.WriteLine("Final:{0}", codes);

    }

    public static string RemoveLastElement(Dictionary<string, string> dict, string codes)

    {       

        var codesCollection = codes.Split('-');

        string result = codes;

        foreach (var item in dict)

        {

            if (codesCollection[codesCollection.Count() - 1] == item.Value)

            {

                codesCollection = codesCollection.Take(codesCollection.Count() - 1).ToArray();

                dict.Remove(item.Key);

                result = RemoveLastElement(dict, string.Join("-", codesCollection));

                break;

            }

        }

        return result;

    }

}