02

using System;
using System.Collections.Generic;
using System.Linq;
namespace Exam
{
class Program
{
    static void Main(string[] args)
    {
        List<string> phones = Console.ReadLine().Split(", ").ToList();

        string command;
        while ((command = Console.ReadLine()) != "End")
        {
            string[] tokens = command.Split(" - ");
            string action = tokens[0];
            string phone = tokens[1];

            switch (action)
            {
                case "Add":
                    if (!phones.Contains(phone))
                    {
                        phones.Add(phone);
                    }
                    break;
                case "Remove":
                    phones.Remove(phone);
                    break;
                case "Bonus phone":
                    string[] bonusTokens = phone.Split(":");
                    string oldPhone = bonusTokens[0];
                    string newPhone = bonusTokens[1];
                    int index = phones.IndexOf(oldPhone);
                    if (index != -1)
                    {
                        phones.Insert(index + 1, newPhone);
                    }
                    break;
                case "Last":
                    if (phones.Contains(phone))
                    {
                        phones.Remove(phone);
                        phones.Add(phone);
                    }
                    break;
            }
        }

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