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

namespace _2._1_On_the_Way_to_Annapurna
{
    class Program
    {
        static void Main()
        {
            Dictionary<string, List<string>> stores = new Dictionary<string, List<string>>();

            while (true)
            {
                string commands = Console.ReadLine();

                if (commands == "END")
                {
                    break;
                }

                string[] commandArgs = commands.Split("->");
                string command = commandArgs[0];
                string store = commandArgs[1];

                if (command == "Add")
                {
                    List<string> items = commandArgs[2].Split(",").ToList();

                    if (!stores.ContainsKey(store))
                    {
                        stores.Add(store, new List<string>());

                        foreach (var item in items)
                        {
                            stores[store].Add(item);
                        }
                    }

                    else
                    {
                        foreach (var item in items)
                        {

                            stores[store].Add(item);

                        }
                    }
                }


                else if (command == "Remove")
                {
                    if (stores.ContainsKey(store))
                    {
                        stores.Remove(store);
                    }
                }
            }


            Console.WriteLine("Stores list:");

            foreach (var store in stores
                .OrderByDescending(x => x.Value.Count)
                .ThenByDescending(x => x.Key))
            {
                Console.WriteLine($"{store.Key}");

                foreach (var item in store.Value)
                {
                    Console.WriteLine($"<<{item}>>");
                }


            }
        }
    }
}