import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int[] count = new int[26];
        for (int i = 0; i < 26; i++)
            count[i] = 0;

        while(sc.hasNext()){
            String input = sc.nextLine();
            String lowed = input.toLowerCase();
            for (int i = 0; i < lowed.length(); i++) {
                if (lowed.charAt(i) >= 'a' && lowed.charAt(i) <= 'z')
                    count[lowed.charAt(i) - 'a']++;
            }
        }

        for (int i = 0; i < 26; i++)
            System.out.println((char) ('a' + i) + " : " + count[i]);
    }
} import java.util.Scanner; Scanner java.util public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int[] count = new int[26];
        for (int i = 0; i < 26; i++)
            count[i] = 0;

        while(sc.hasNext()){
            String input = sc.nextLine();
            String lowed = input.toLowerCase();
            for (int i = 0; i < lowed.length(); i++) {
                if (lowed.charAt(i) >= 'a' && lowed.charAt(i) <= 'z')
                    count[lowed.charAt(i) - 'a']++;
            }
        }

        for (int i = 0; i < 26; i++)
            System.out.println((char) ('a' + i) + " : " + count[i]);
    }
} Main public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int[] count = new int[26];
        for (int i = 0; i < 26; i++)
            count[i] = 0;

        while(sc.hasNext()){
            String input = sc.nextLine();
            String lowed = input.toLowerCase();
            for (int i = 0; i < lowed.length(); i++) {
                if (lowed.charAt(i) >= 'a' && lowed.charAt(i) <= 'z')
                    count[lowed.charAt(i) - 'a']++;
            }
        }

        for (int i = 0; i < 26; i++)
            System.out.println((char) ('a' + i) + " : " + count[i]);
    } main {
        Scanner sc = new Scanner(System.in);
        int[] count = new int[26];
        for (int i = 0; i < 26; i++)
            count[i] = 0;

        while(sc.hasNext()){
            String input = sc.nextLine();
            String lowed = input.toLowerCase();
            for (int i = 0; i < lowed.length(); i++) {
                if (lowed.charAt(i) >= 'a' && lowed.charAt(i) <= 'z')
                    count[lowed.charAt(i) - 'a']++;
            }
        }

        for (int i = 0; i < 26; i++)
            System.out.println((char) ('a' + i) + " : " + count[i]);
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int[] count = new int[26]; count new int[26] 26 for (int i = 0; i < 26; i++)
            count[i] = 0; int i = 0; int i = 0; i 0 i < 26 i 26 i++ i++ i count[i] = 0; count[i] = 0 count[i] count i 0 while(sc.hasNext()){
            String input = sc.nextLine();
            String lowed = input.toLowerCase();
            for (int i = 0; i < lowed.length(); i++) {
                if (lowed.charAt(i) >= 'a' && lowed.charAt(i) <= 'z')
                    count[lowed.charAt(i) - 'a']++;
            }
        } sc.hasNext() sc.hasNext sc {
            String input = sc.nextLine();
            String lowed = input.toLowerCase();
            for (int i = 0; i < lowed.length(); i++) {
                if (lowed.charAt(i) >= 'a' && lowed.charAt(i) <= 'z')
                    count[lowed.charAt(i) - 'a']++;
            }
        } String input = sc.nextLine(); input sc.nextLine() sc.nextLine sc String lowed = input.toLowerCase(); lowed input.toLowerCase() input.toLowerCase input for (int i = 0; i < lowed.length(); i++) {
                if (lowed.charAt(i) >= 'a' && lowed.charAt(i) <= 'z')
                    count[lowed.charAt(i) - 'a']++;
            } int i = 0; int i = 0; i 0 i < lowed.length() i lowed.length() lowed.length lowed i++ i++ i {
                if (lowed.charAt(i) >= 'a' && lowed.charAt(i) <= 'z')
                    count[lowed.charAt(i) - 'a']++;
            } {
                if (lowed.charAt(i) >= 'a' && lowed.charAt(i) <= 'z')
                    count[lowed.charAt(i) - 'a']++;
            } if (lowed.charAt(i) >= 'a' && lowed.charAt(i) <= 'z')
                    count[lowed.charAt(i) - 'a']++; lowed.charAt(i) >= 'a' && lowed.charAt(i) <= 'z' lowed.charAt(i) >= 'a' lowed.charAt(i) lowed.charAt lowed i 'a' lowed.charAt(i) <= 'z' lowed.charAt(i) lowed.charAt lowed i 'z' count[lowed.charAt(i) - 'a']++ count[lowed.charAt(i) - 'a'] count lowed.charAt(i) - 'a' lowed.charAt(i) lowed.charAt lowed i 'a' for (int i = 0; i < 26; i++)
            System.out.println((char) ('a' + i) + " : " + count[i]); int i = 0; int i = 0; i 0 i < 26 i 26 i++ i++ i System.out.println((char) ('a' + i) + " : " + count[i]); System.out.println((char) ('a' + i) + " : " + count[i]) System.out.println System.out System System.out (char) ('a' + i) + " : " + count[i] (char) ('a' + i) + " : " + count[i] (char) ('a' + i) 'a' i " : " count[i] count i String[] args args public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int[] count = new int[26];
        for (int i = 0; i < 26; i++)
            count[i] = 0;

        while(sc.hasNext()){
            String input = sc.nextLine();
            String lowed = input.toLowerCase();
            for (int i = 0; i < lowed.length(); i++) {
                if (lowed.charAt(i) >= 'a' && lowed.charAt(i) <= 'z')
                    count[lowed.charAt(i) - 'a']++;
            }
        }

        for (int i = 0; i < 26; i++)
            System.out.println((char) ('a' + i) + " : " + count[i]);
    }
} public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int[] count = new int[26];
        for (int i = 0; i < 26; i++)
            count[i] = 0;

        while(sc.hasNext()){
            String input = sc.nextLine();
            String lowed = input.toLowerCase();
            for (int i = 0; i < lowed.length(); i++) {
                if (lowed.charAt(i) >= 'a' && lowed.charAt(i) <= 'z')
                    count[lowed.charAt(i) - 'a']++;
            }
        }

        for (int i = 0; i < 26; i++)
            System.out.println((char) ('a' + i) + " : " + count[i]);
    }
} Main
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int[] count = new int[26];
        for (int i = 0; i < 26; i++)
            count[i] = 0;

        while(sc.hasNext()){
            String input = sc.nextLine();
            String lowed = input.toLowerCase();
            for (int i = 0; i < lowed.length(); i++) {
                if (lowed.charAt(i) >= 'a' && lowed.charAt(i) <= 'z')
                    count[lowed.charAt(i) - 'a']++;
            }
        }

        for (int i = 0; i < 26; i++)
            System.out.println((char) ('a' + i) + " : " + count[i]);
    }
}
