import java.util.Scanner;

public class Main {
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);

        int[] count;
        count = new int[128];
        String alpha = "abcdefghijklmnopqrstuvwxyz";
        String sen="";
        String pass;

        while(sc.hasNext()){  
            pass = sc.nextLine();        
            sen += pass;
        }
        sen = sen.toLowerCase();
        sen = sen.replace(" ", "");

        for(int i=0; i<sen.length(); i++){
            count[sen.charAt(i)]++;
        }

        for(int i =97; i<=122;i++){
            System.out.println(alpha.charAt(i-97) +" : "+ count[i]);
        }


        sc.close();

    }
} import java.util.Scanner; Scanner java.util public class Main {
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);

        int[] count;
        count = new int[128];
        String alpha = "abcdefghijklmnopqrstuvwxyz";
        String sen="";
        String pass;

        while(sc.hasNext()){  
            pass = sc.nextLine();        
            sen += pass;
        }
        sen = sen.toLowerCase();
        sen = sen.replace(" ", "");

        for(int i=0; i<sen.length(); i++){
            count[sen.charAt(i)]++;
        }

        for(int i =97; i<=122;i++){
            System.out.println(alpha.charAt(i-97) +" : "+ count[i]);
        }


        sc.close();

    }
} Main public static void main(String[] args){
        Scanner sc = new Scanner(System.in);

        int[] count;
        count = new int[128];
        String alpha = "abcdefghijklmnopqrstuvwxyz";
        String sen="";
        String pass;

        while(sc.hasNext()){  
            pass = sc.nextLine();        
            sen += pass;
        }
        sen = sen.toLowerCase();
        sen = sen.replace(" ", "");

        for(int i=0; i<sen.length(); i++){
            count[sen.charAt(i)]++;
        }

        for(int i =97; i<=122;i++){
            System.out.println(alpha.charAt(i-97) +" : "+ count[i]);
        }


        sc.close();

    } main {
        Scanner sc = new Scanner(System.in);

        int[] count;
        count = new int[128];
        String alpha = "abcdefghijklmnopqrstuvwxyz";
        String sen="";
        String pass;

        while(sc.hasNext()){  
            pass = sc.nextLine();        
            sen += pass;
        }
        sen = sen.toLowerCase();
        sen = sen.replace(" ", "");

        for(int i=0; i<sen.length(); i++){
            count[sen.charAt(i)]++;
        }

        for(int i =97; i<=122;i++){
            System.out.println(alpha.charAt(i-97) +" : "+ count[i]);
        }


        sc.close();

    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int[] count; count count = new int[128] count new int[128] 128 String alpha = "abcdefghijklmnopqrstuvwxyz"; alpha "abcdefghijklmnopqrstuvwxyz" String sen=""; sen "" String pass; pass while(sc.hasNext()){  
            pass = sc.nextLine();        
            sen += pass;
        } sc.hasNext() sc.hasNext sc {  
            pass = sc.nextLine();        
            sen += pass;
        } pass = sc.nextLine() pass sc.nextLine() sc.nextLine sc sen += pass sen pass sen = sen.toLowerCase() sen sen.toLowerCase() sen.toLowerCase sen sen = sen.replace(" ", "") sen sen.replace(" ", "") sen.replace sen " " "" for(int i=0; i<sen.length(); i++){
            count[sen.charAt(i)]++;
        } int i=0; int i=0; i 0 i<sen.length() i sen.length() sen.length sen i++ i++ i {
            count[sen.charAt(i)]++;
        } {
            count[sen.charAt(i)]++;
        } count[sen.charAt(i)]++ count[sen.charAt(i)] count sen.charAt(i) sen.charAt sen i for(int i =97; i<=122;i++){
            System.out.println(alpha.charAt(i-97) +" : "+ count[i]);
        } int i =97; int i =97; i 97 i<=122 i 122 i++ i++ i {
            System.out.println(alpha.charAt(i-97) +" : "+ count[i]);
        } {
            System.out.println(alpha.charAt(i-97) +" : "+ count[i]);
        } System.out.println(alpha.charAt(i-97) +" : "+ count[i]) System.out.println System.out System System.out alpha.charAt(i-97) +" : "+ count[i] alpha.charAt(i-97) +" : "+ count[i] alpha.charAt(i-97) alpha.charAt alpha i-97 i 97 " : " count[i] count i sc.close() sc.close sc String[] args args public class Main {
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);

        int[] count;
        count = new int[128];
        String alpha = "abcdefghijklmnopqrstuvwxyz";
        String sen="";
        String pass;

        while(sc.hasNext()){  
            pass = sc.nextLine();        
            sen += pass;
        }
        sen = sen.toLowerCase();
        sen = sen.replace(" ", "");

        for(int i=0; i<sen.length(); i++){
            count[sen.charAt(i)]++;
        }

        for(int i =97; i<=122;i++){
            System.out.println(alpha.charAt(i-97) +" : "+ count[i]);
        }


        sc.close();

    }
} public class Main {
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);

        int[] count;
        count = new int[128];
        String alpha = "abcdefghijklmnopqrstuvwxyz";
        String sen="";
        String pass;

        while(sc.hasNext()){  
            pass = sc.nextLine();        
            sen += pass;
        }
        sen = sen.toLowerCase();
        sen = sen.replace(" ", "");

        for(int i=0; i<sen.length(); i++){
            count[sen.charAt(i)]++;
        }

        for(int i =97; i<=122;i++){
            System.out.println(alpha.charAt(i-97) +" : "+ count[i]);
        }


        sc.close();

    }
} Main
import java.util.Scanner;

public class Main {
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);

        int[] count;
        count = new int[128];
        String alpha = "abcdefghijklmnopqrstuvwxyz";
        String sen="";
        String pass;

        while(sc.hasNext()){  
            pass = sc.nextLine();        
            sen += pass;
        }
        sen = sen.toLowerCase();
        sen = sen.replace(" ", "");

        for(int i=0; i<sen.length(); i++){
            count[sen.charAt(i)]++;
        }

        for(int i =97; i<=122;i++){
            System.out.println(alpha.charAt(i-97) +" : "+ count[i]);
        }


        sc.close();

    }
}
