import java.util.Map;
import java.util.TreeMap;
public class LetterFreq
{
    public static void main(String[] args)
    {
        Map<Character, Integer> frequencies = new TreeMap<>();
        String fileName = args[0];
        s = s.toLowerCase();
        //initalize map
        for(char q = 'a'; q <= 'z'; q++)
        {
            frequencies.put(q, 0);
        }
        for(int k = 0; k < s.length(); k++)
        {
            char ch = s.charAt(k);
            if(Character.isLowerCase(ch))
            {
                frequencies.put(ch, frequencies.get(ch) + 1);
            }
        }
        System.out.println(frequencies);
    }
}