using System;
using System.Collections.Generic;
using System.Linq;

namespace ArrivingInKathmandu
{
    class Program
    {
        static void Main(string[] args)
        {
            var storesAndItems = new Dictionary<string, List<string>>();

            string commands;

            while ((commands = Console.ReadLine()) != "END")
            {
                List<string> splitedCommand = commands.Split("->").ToList();
                string toDo = splitedCommand[0];

                if (toDo == "Add")
                {
                    string store = splitedCommand[1];
                    List<string> items = splitedCommand[2].Split(",").ToList();
                    if (!storesAndItems.ContainsKey(store))
                    {
                        storesAndItems[store] = new List<string>();
                    }
                    foreach (var item in items)
                    {
                        storesAndItems[store].Add(item);
                    }
                }
                else if (toDo == "Remove")
                {
                    string storeToRemove = splitedCommand[1];
                    if (storesAndItems.ContainsKey(storeToRemove))
                    {
                        storesAndItems.Remove(storeToRemove);

                    }
                }
            }
            Console.WriteLine("Stores list: ");
            foreach (var store in storesAndItems.OrderByDescending(x => x.Value.Count).ThenByDescending(x => x.Key))
            {
                Console.WriteLine($"{store.Key}");
                foreach (var item in store.Value)
                {
                    Console.WriteLine($"<<{item}>>");

                }
            }
        }
    }
}