import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.nio.channels.NonWritableChannelException;
import java.util.HashMap;
import java.util.Map;
import java.util.Scanner;

public class Main {
    public static void main(String[] args) throws Exception {
        
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        
        // create a to z map
        Map<Character, Integer> alphamap = new HashMap<Character, Integer>();
        for(int i='a'; i<='z'; i++) {
            alphamap.put((char) i, 0);
        }
        
        String line = "";
        while ( (line = br.readLine()) != null ) {
            for (int i=0; i<line.length(); i++) {
                char c = line.charAt(i);
                c = Character.toLowerCase(c);
                if (alphamap.containsKey(c)) {
                    alphamap.replace(c, alphamap.get(c) + 1);
                }
            }
        }


        

        
        for( Character c : alphamap.keySet()) {
            System.out.println(c + " : " + alphamap.get(c));
        }
        
        
    }


} import java.io.BufferedReader; BufferedReader java.io import java.io.IOException; IOException java.io import java.io.InputStreamReader; InputStreamReader java.io import java.nio.channels.NonWritableChannelException; NonWritableChannelException java.nio.channels import java.util.HashMap; HashMap java.util import java.util.Map; Map java.util import java.util.Scanner; Scanner java.util public class Main {
    public static void main(String[] args) throws Exception {
        
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        
        // create a to z map
        Map<Character, Integer> alphamap = new HashMap<Character, Integer>();
        for(int i='a'; i<='z'; i++) {
            alphamap.put((char) i, 0);
        }
        
        String line = "";
        while ( (line = br.readLine()) != null ) {
            for (int i=0; i<line.length(); i++) {
                char c = line.charAt(i);
                c = Character.toLowerCase(c);
                if (alphamap.containsKey(c)) {
                    alphamap.replace(c, alphamap.get(c) + 1);
                }
            }
        }


        

        
        for( Character c : alphamap.keySet()) {
            System.out.println(c + " : " + alphamap.get(c));
        }
        
        
    }


} Main public static void main(String[] args) throws Exception {
        
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        
        // create a to z map
        Map<Character, Integer> alphamap = new HashMap<Character, Integer>();
        for(int i='a'; i<='z'; i++) {
            alphamap.put((char) i, 0);
        }
        
        String line = "";
        while ( (line = br.readLine()) != null ) {
            for (int i=0; i<line.length(); i++) {
                char c = line.charAt(i);
                c = Character.toLowerCase(c);
                if (alphamap.containsKey(c)) {
                    alphamap.replace(c, alphamap.get(c) + 1);
                }
            }
        }


        

        
        for( Character c : alphamap.keySet()) {
            System.out.println(c + " : " + alphamap.get(c));
        }
        
        
    } main {
        
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        
        // create a to z map
        Map<Character, Integer> alphamap = new HashMap<Character, Integer>();
        for(int i='a'; i<='z'; i++) {
            alphamap.put((char) i, 0);
        }
        
        String line = "";
        while ( (line = br.readLine()) != null ) {
            for (int i=0; i<line.length(); i++) {
                char c = line.charAt(i);
                c = Character.toLowerCase(c);
                if (alphamap.containsKey(c)) {
                    alphamap.replace(c, alphamap.get(c) + 1);
                }
            }
        }


        

        
        for( Character c : alphamap.keySet()) {
            System.out.println(c + " : " + alphamap.get(c));
        }
        
        
    } BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); br new BufferedReader(new InputStreamReader(System.in)) Map<Character, Integer> alphamap = new HashMap<Character, Integer>(); alphamap new HashMap<Character, Integer>() for(int i='a'; i<='z'; i++) {
            alphamap.put((char) i, 0);
        } int i='a'; int i='a'; i 'a' i<='z' i 'z' i++ i++ i {
            alphamap.put((char) i, 0);
        } {
            alphamap.put((char) i, 0);
        } alphamap.put((char) i, 0) alphamap.put alphamap (char) i 0 String line = ""; line "" while ( (line = br.readLine()) != null ) {
            for (int i=0; i<line.length(); i++) {
                char c = line.charAt(i);
                c = Character.toLowerCase(c);
                if (alphamap.containsKey(c)) {
                    alphamap.replace(c, alphamap.get(c) + 1);
                }
            }
        } (line = br.readLine()) != null (line = br.readLine()) line br.readLine() br.readLine br null {
            for (int i=0; i<line.length(); i++) {
                char c = line.charAt(i);
                c = Character.toLowerCase(c);
                if (alphamap.containsKey(c)) {
                    alphamap.replace(c, alphamap.get(c) + 1);
                }
            }
        } for (int i=0; i<line.length(); i++) {
                char c = line.charAt(i);
                c = Character.toLowerCase(c);
                if (alphamap.containsKey(c)) {
                    alphamap.replace(c, alphamap.get(c) + 1);
                }
            } int i=0; int i=0; i 0 i<line.length() i line.length() line.length line i++ i++ i {
                char c = line.charAt(i);
                c = Character.toLowerCase(c);
                if (alphamap.containsKey(c)) {
                    alphamap.replace(c, alphamap.get(c) + 1);
                }
            } {
                char c = line.charAt(i);
                c = Character.toLowerCase(c);
                if (alphamap.containsKey(c)) {
                    alphamap.replace(c, alphamap.get(c) + 1);
                }
            } char c = line.charAt(i); c line.charAt(i) line.charAt line i c = Character.toLowerCase(c) c Character.toLowerCase(c) Character.toLowerCase Character c if (alphamap.containsKey(c)) {
                    alphamap.replace(c, alphamap.get(c) + 1);
                } alphamap.containsKey(c) alphamap.containsKey alphamap c {
                    alphamap.replace(c, alphamap.get(c) + 1);
                } alphamap.replace(c, alphamap.get(c) + 1) alphamap.replace alphamap c alphamap.get(c) + 1 alphamap.get(c) alphamap.get alphamap c 1 for( Character c : alphamap.keySet()) {
            System.out.println(c + " : " + alphamap.get(c));
        } Character c alphamap.keySet() alphamap.keySet alphamap {
            System.out.println(c + " : " + alphamap.get(c));
        } {
            System.out.println(c + " : " + alphamap.get(c));
        } System.out.println(c + " : " + alphamap.get(c)) System.out.println System.out System System.out c + " : " + alphamap.get(c) c + " : " + alphamap.get(c) c " : " alphamap.get(c) alphamap.get alphamap c String[] args args public class Main {
    public static void main(String[] args) throws Exception {
        
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        
        // create a to z map
        Map<Character, Integer> alphamap = new HashMap<Character, Integer>();
        for(int i='a'; i<='z'; i++) {
            alphamap.put((char) i, 0);
        }
        
        String line = "";
        while ( (line = br.readLine()) != null ) {
            for (int i=0; i<line.length(); i++) {
                char c = line.charAt(i);
                c = Character.toLowerCase(c);
                if (alphamap.containsKey(c)) {
                    alphamap.replace(c, alphamap.get(c) + 1);
                }
            }
        }


        

        
        for( Character c : alphamap.keySet()) {
            System.out.println(c + " : " + alphamap.get(c));
        }
        
        
    }


} public class Main {
    public static void main(String[] args) throws Exception {
        
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        
        // create a to z map
        Map<Character, Integer> alphamap = new HashMap<Character, Integer>();
        for(int i='a'; i<='z'; i++) {
            alphamap.put((char) i, 0);
        }
        
        String line = "";
        while ( (line = br.readLine()) != null ) {
            for (int i=0; i<line.length(); i++) {
                char c = line.charAt(i);
                c = Character.toLowerCase(c);
                if (alphamap.containsKey(c)) {
                    alphamap.replace(c, alphamap.get(c) + 1);
                }
            }
        }


        

        
        for( Character c : alphamap.keySet()) {
            System.out.println(c + " : " + alphamap.get(c));
        }
        
        
    }


} Main
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.nio.channels.NonWritableChannelException;
import java.util.HashMap;
import java.util.Map;
import java.util.Scanner;

public class Main {
    public static void main(String[] args) throws Exception {
        
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        
        // create a to z map
        Map<Character, Integer> alphamap = new HashMap<Character, Integer>();
        for(int i='a'; i<='z'; i++) {
            alphamap.put((char) i, 0);
        }
        
        String line = "";
        while ( (line = br.readLine()) != null ) {
            for (int i=0; i<line.length(); i++) {
                char c = line.charAt(i);
                c = Character.toLowerCase(c);
                if (alphamap.containsKey(c)) {
                    alphamap.replace(c, alphamap.get(c) + 1);
                }
            }
        }


        

        
        for( Character c : alphamap.keySet()) {
            System.out.println(c + " : " + alphamap.get(c));
        }
        
        
    }


}
