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

namespace Exercise
{
    class Program
    {
        static void Main(string[] args)
        {
            string input = Console.ReadLine();
            input = input.ToLower();
            var counts = new Dictionary<string, int>();
            for (int i = 0; i < input.Length; i++)
            {
                char current = input[i];
                if (current!=' ')
                {
                    string forAdding = current.ToString();
                    if (counts.ContainsKey(forAdding))
                    { counts[forAdding]++; }
                    else
                    {
                        counts.Add(forAdding, 1);
                        }
                }

            }

            foreach (var item in counts)
            {
                Console.WriteLine(item.Key+ " -> "+ item.Value);

            }
        }
    }
}