03.PhoneShop

namespace _03.PhoneShop
{
    internal class Program
    {
        static void Main(string[] args)
        {
            List<string> phones = Console.ReadLine().Split(", ").ToList();

            string input;

            while ( (input = Console.ReadLine()) != "End" )
            {
                string[] command = input.Split();

                if (command[0] == "Add")
                {
                    if ( !(phones.Contains(command[2])) )
                    {
                        phones.Add(command[2]);
                    }
                }

                else if (command[0] == "Remove")
                {
                    if (phones.Contains(command[2]))
                    {
                        phones.Remove(command[2]);
                    }
                }

                else if ( (command[0] == "Bonus") && (command[1] == "phone") )
                {
                    string newPhoneArray = command[3];

                    int indexOfTheDivider = newPhoneArray.IndexOf(":");

                    string oldPhone = "";

                    for (int i = 0; i < indexOfTheDivider; i++)
                    {
                        oldPhone += newPhoneArray[i];
                    }

                    string newPhone = "";

                    for (int i = indexOfTheDivider + 1; i < newPhoneArray.Length; i++)
                    {
                        newPhone += newPhoneArray[i];
                    }

                    if (phones.Contains(oldPhone))
                    {
                        int indexOfTheOldPhone = phones.IndexOf(oldPhone) + 1;

                        phones.Insert(indexOfTheOldPhone, newPhone);
                    }
                }

                else if (command[0] == "Last")
                {
                    if (phones.Contains(command[2]))
                    {
                        int indexOfThePhone = phones.IndexOf(command[2]);

                        string phoneWtihChangePosition = phones[indexOfThePhone];

                        phones.Remove(command[2]);

                        phones.Add(phoneWtihChangePosition);
                    }
                }
            }

            Console.WriteLine(string.Join(", ", phones));
        }
    }
}