import java.util.Scanner;

public class Main {

    public static void main(String[] args) {

        Scanner sc = new Scanner(System.in);

        String str = "";

        while (sc.hasNextLine()) {
            str += sc.nextLine();
        }

        char x;
        char[] alpha = new char[26];
        int[] count = new int[26];

        int k = 0;
        for (x = 'a'; x <= 'z'; x++) {
            alpha[k] = x;
            k++;
        }

        char[] strArray = (str.toLowerCase()).toCharArray();

        for (int i = 0; i < strArray.length; i++) {
            for (int j = 0; j < alpha.length; j++) {
                if (strArray[i] == alpha[j]) {
                    count[j] += 1;
                }
            }
        }

        for (int i = 0; i < alpha.length; i++) {
            System.out.println(alpha[i] + " : " + 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);

        String str = "";

        while (sc.hasNextLine()) {
            str += sc.nextLine();
        }

        char x;
        char[] alpha = new char[26];
        int[] count = new int[26];

        int k = 0;
        for (x = 'a'; x <= 'z'; x++) {
            alpha[k] = x;
            k++;
        }

        char[] strArray = (str.toLowerCase()).toCharArray();

        for (int i = 0; i < strArray.length; i++) {
            for (int j = 0; j < alpha.length; j++) {
                if (strArray[i] == alpha[j]) {
                    count[j] += 1;
                }
            }
        }

        for (int i = 0; i < alpha.length; i++) {
            System.out.println(alpha[i] + " : " + count[i]);
        }

        sc.close();
    }
} Main public static void main(String[] args) {

        Scanner sc = new Scanner(System.in);

        String str = "";

        while (sc.hasNextLine()) {
            str += sc.nextLine();
        }

        char x;
        char[] alpha = new char[26];
        int[] count = new int[26];

        int k = 0;
        for (x = 'a'; x <= 'z'; x++) {
            alpha[k] = x;
            k++;
        }

        char[] strArray = (str.toLowerCase()).toCharArray();

        for (int i = 0; i < strArray.length; i++) {
            for (int j = 0; j < alpha.length; j++) {
                if (strArray[i] == alpha[j]) {
                    count[j] += 1;
                }
            }
        }

        for (int i = 0; i < alpha.length; i++) {
            System.out.println(alpha[i] + " : " + count[i]);
        }

        sc.close();
    } main {

        Scanner sc = new Scanner(System.in);

        String str = "";

        while (sc.hasNextLine()) {
            str += sc.nextLine();
        }

        char x;
        char[] alpha = new char[26];
        int[] count = new int[26];

        int k = 0;
        for (x = 'a'; x <= 'z'; x++) {
            alpha[k] = x;
            k++;
        }

        char[] strArray = (str.toLowerCase()).toCharArray();

        for (int i = 0; i < strArray.length; i++) {
            for (int j = 0; j < alpha.length; j++) {
                if (strArray[i] == alpha[j]) {
                    count[j] += 1;
                }
            }
        }

        for (int i = 0; i < alpha.length; i++) {
            System.out.println(alpha[i] + " : " + count[i]);
        }

        sc.close();
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String str = ""; str "" while (sc.hasNextLine()) {
            str += sc.nextLine();
        } sc.hasNextLine() sc.hasNextLine sc {
            str += sc.nextLine();
        } str += sc.nextLine() str sc.nextLine() sc.nextLine sc char x; x char[] alpha = new char[26]; alpha new char[26] 26 int[] count = new int[26]; count new int[26] 26 int k = 0; k 0 for (x = 'a'; x <= 'z'; x++) {
            alpha[k] = x;
            k++;
        } x = 'a'; x = 'a' x 'a' x <= 'z' x 'z' x++ x++ x {
            alpha[k] = x;
            k++;
        } {
            alpha[k] = x;
            k++;
        } alpha[k] = x alpha[k] alpha k x k++ k char[] strArray = (str.toLowerCase()).toCharArray(); strArray (str.toLowerCase()).toCharArray() (str.toLowerCase()).toCharArray (str.toLowerCase()) str.toLowerCase str for (int i = 0; i < strArray.length; i++) {
            for (int j = 0; j < alpha.length; j++) {
                if (strArray[i] == alpha[j]) {
                    count[j] += 1;
                }
            }
        } int i = 0; int i = 0; i 0 i < strArray.length i strArray.length strArray strArray.length i++ i++ i {
            for (int j = 0; j < alpha.length; j++) {
                if (strArray[i] == alpha[j]) {
                    count[j] += 1;
                }
            }
        } {
            for (int j = 0; j < alpha.length; j++) {
                if (strArray[i] == alpha[j]) {
                    count[j] += 1;
                }
            }
        } for (int j = 0; j < alpha.length; j++) {
                if (strArray[i] == alpha[j]) {
                    count[j] += 1;
                }
            } int j = 0; int j = 0; j 0 j < alpha.length j alpha.length alpha alpha.length j++ j++ j {
                if (strArray[i] == alpha[j]) {
                    count[j] += 1;
                }
            } {
                if (strArray[i] == alpha[j]) {
                    count[j] += 1;
                }
            } if (strArray[i] == alpha[j]) {
                    count[j] += 1;
                } strArray[i] == alpha[j] strArray[i] strArray i alpha[j] alpha j {
                    count[j] += 1;
                } count[j] += 1 count[j] count j 1 for (int i = 0; i < alpha.length; i++) {
            System.out.println(alpha[i] + " : " + count[i]);
        } int i = 0; int i = 0; i 0 i < alpha.length i alpha.length alpha alpha.length i++ i++ i {
            System.out.println(alpha[i] + " : " + count[i]);
        } {
            System.out.println(alpha[i] + " : " + count[i]);
        } System.out.println(alpha[i] + " : " + count[i]) System.out.println System.out System System.out alpha[i] + " : " + count[i] alpha[i] + " : " + count[i] alpha[i] alpha i " : " 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);

        String str = "";

        while (sc.hasNextLine()) {
            str += sc.nextLine();
        }

        char x;
        char[] alpha = new char[26];
        int[] count = new int[26];

        int k = 0;
        for (x = 'a'; x <= 'z'; x++) {
            alpha[k] = x;
            k++;
        }

        char[] strArray = (str.toLowerCase()).toCharArray();

        for (int i = 0; i < strArray.length; i++) {
            for (int j = 0; j < alpha.length; j++) {
                if (strArray[i] == alpha[j]) {
                    count[j] += 1;
                }
            }
        }

        for (int i = 0; i < alpha.length; i++) {
            System.out.println(alpha[i] + " : " + count[i]);
        }

        sc.close();
    }
} public class Main {

    public static void main(String[] args) {

        Scanner sc = new Scanner(System.in);

        String str = "";

        while (sc.hasNextLine()) {
            str += sc.nextLine();
        }

        char x;
        char[] alpha = new char[26];
        int[] count = new int[26];

        int k = 0;
        for (x = 'a'; x <= 'z'; x++) {
            alpha[k] = x;
            k++;
        }

        char[] strArray = (str.toLowerCase()).toCharArray();

        for (int i = 0; i < strArray.length; i++) {
            for (int j = 0; j < alpha.length; j++) {
                if (strArray[i] == alpha[j]) {
                    count[j] += 1;
                }
            }
        }

        for (int i = 0; i < alpha.length; i++) {
            System.out.println(alpha[i] + " : " + count[i]);
        }

        sc.close();
    }
} Main
import java.util.Scanner;

public class Main {

    public static void main(String[] args) {

        Scanner sc = new Scanner(System.in);

        String str = "";

        while (sc.hasNextLine()) {
            str += sc.nextLine();
        }

        char x;
        char[] alpha = new char[26];
        int[] count = new int[26];

        int k = 0;
        for (x = 'a'; x <= 'z'; x++) {
            alpha[k] = x;
            k++;
        }

        char[] strArray = (str.toLowerCase()).toCharArray();

        for (int i = 0; i < strArray.length; i++) {
            for (int j = 0; j < alpha.length; j++) {
                if (strArray[i] == alpha[j]) {
                    count[j] += 1;
                }
            }
        }

        for (int i = 0; i < alpha.length; i++) {
            System.out.println(alpha[i] + " : " + count[i]);
        }

        sc.close();
    }
}
