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

namespace ConsoleApp206
{
    class Program
    {
        static void Main(string[] args)
        {
            string command = string.Empty;
            List<string> names = new List<string>();
            Dictionary<string,List<string> > modules= new Dictionary<string, List<string>>();
            while((command=Console.ReadLine())!="end")
            {
                string[] text = command.Split(" : ").ToArray();
                string module = text[0];
                string name = text[1];
                if(!modules.ContainsKey(module))
                {
                   modules.Add(module,names);
                    names.Add(name);
                    names = new List<string>();

                }
                else
                {
                    modules[module].Add(name);
                }

            }
            foreach (var item in modules.OrderByDescending(x => x.Value.Count))
            {
                Console.WriteLine($"{item.Key}: {item.Value.Count}");

               foreach(var kvp in item.Value.OrderBy(x=>x))
                {
                    Console.WriteLine($"-- {kvp}");
                }

            }


            }
        }
    }