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

namespace apps
{
    class Program
    {

        static string Get() { return Console.ReadLine(); }

        static void Main()
        {

            string alphabet = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";

            string input = Get();
            Dictionary<char, int> occurances = new Dictionary<char, int>();
            foreach (char c in input)
            {
                if (alphabet.Contains(c) == true && occurances.ContainsKey(c) == false)
                {
                    occurances.Add(c, 0);
                }
            }
            foreach (char c in input)
            {
                if (c != ' ')
                {
                    occurances[c]++;
                }
            }

            foreach( var v in occurances)
            {
                Console.WriteLine($"{v.Key} -> {v.Value}");
            }

        }// END MAIN
    }
}