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

class CountSymbols
{
    static void Main()
    {
        string input = Console.ReadLine();

        SortedDictionary<char, int> characters = new SortedDictionary<char, int>();

        foreach (char character in input)
        {
            if (characters.ContainsKey(character))
            {
                characters[character]++;
            }
            else
            {
                characters.Add(character, 1);
            }
        }

        char[] charKeys = characters.Keys.ToArray();

        foreach (var character in charKeys)
        {
            Console.WriteLine($"{character}: {characters[character]} time/s");
        }
    }
}