count chars in string

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


namespace Order_By_Age
{
    class Program
    {
        static void Main(string[] args)
        {
            string[] word = Console.ReadLine().Split();

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

            for (int i = 0; i < word.Length; i++)
            {
                string some = word[i];

                foreach (char item in some)
                {
                    if (output.ContainsKey(item))
                    {
                        output[item]++;
                    }
                    else
                    {
                        output[item] = 1;
                    }
                }
            }

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

        }
    }
}