using System;
using System.Collections.Generic;
using System.Text.RegularExpressions;
using System.Linq;

namespace Company_Users
{
    class Program
    {
        static void Main(string[] args)
        {
            var input = new Dictionary<string, List<string>>();
            string inputLine = Console.ReadLine();
            while (inputLine != "End")
            {
                List<string> command = inputLine.Split(" -> ").ToList();
                string companyName = command[0];
                string IDOfEmployee = command[1];

                if (!input.ContainsKey(companyName))
                {
                    input.Add(companyName, new List<string>());
                }
                if (!input[companyName].Contains(IDOfEmployee))
                {
                    input[companyName].Add(IDOfEmployee);
                }
                inputLine = Console.ReadLine();
            }

            foreach (var kvp in input.OrderBy(kvp => kvp.Key))
            {
                Console.WriteLine($"{kvp.Key}");
                foreach (var IdOfEmployee in kvp.Value)
                {
                    Console.WriteLine($"-- {IdOfEmployee}");
                }
            }
        }
    }
}