using System;

using System.Collections.Generic;

using System.Linq;

public class Program

{

    public static void Main()

    {

        var symbols = Console.ReadLine();

        Dictionary<char, int> counts = new Dictionary<char, int>(); 

        foreach (char item in symbols)

        {

            if(counts.ContainsKey(item))

            {

                counts[item]++;

            }

            else

            {

                counts[item] = 1;

            }

        }

        foreach (var kvp in counts)

        {

            Console.WriteLine("{0} -> {1}", kvp.Key, kvp.Value);

        }

    }

}