Count Of Letters

using System;
using System.Collections.Generic;
class CountOfLetters
{
    static void Main()
    {
        string letters = Console.ReadLine();
        string splited = letters.Replace(" ", string.Empty);
        List<char> splitedLetters = new List<char>();
        foreach (char item in splited)
        {
            splitedLetters.Add(item);
        }
	splitedLetters.Sort();
        int counter = 1;
        for (int i = 1; i < splitedLetters.Count; i++)
        {
            if (splitedLetters[i] == splitedLetters[i - 1])
            {
                counter++;
            }
            else
            {
                Console.WriteLine("{0} -> {1}", splitedLetters[i - 1], counter);
                counter = 1;
            }
            if (i == splitedLetters.Count - 1)
            {
                Console.WriteLine("{0} -> {1}", splitedLetters[i], counter);
            }
        }
    }
}