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

namespace CompanyUsers
{
    class Program
    {
        static void Main(string[] args)
        {
            string[] command = Console.ReadLine().Split(" -> ");
            Dictionary<string, List<string>> dictOfEmployees = new Dictionary<string, List<string>>();

            while (command[0] != "End")
            {
                string companyName = command[0];
                string id = command[1];

                if (!dictOfEmployees.ContainsKey(companyName))
                {
                    dictOfEmployees.Add(companyName, new List<string>() { id });
                }
                else if (dictOfEmployees.ContainsKey(companyName) && !dictOfEmployees[companyName].Contains(id))
                {
                    dictOfEmployees[companyName].Add(id);
                }
                command = Console.ReadLine().Split(" -> ");
            }

            foreach (var item in dictOfEmployees.OrderBy(x => x.Key))
            {
                Console.WriteLine(item.Key);
                foreach (var id in dictOfEmployees[item.Key])
                {
                    Console.WriteLine($"-- {id}");
                }
            }
        }
    }
}