import java.util.Scanner;
class Main {
    public static void main(String args[]) {
        Scanner scan = new Scanner(System.in);
        int[] num = new int['z' - 'a' + 1];
        while (scan.hasNext()) {
            char[] chars = scan.next().toLowerCase().toCharArray();
            for (char ch : chars) {
                if (Character.isLetter(ch)) {
                    num[ch - 'a']++;
                }
            }
        }
        for (int i = 0; i < num.length; i++) {
            System.out.printf("%c : %d\n", (char)('a' + i), num[i]);
        }
    }
} import java.util.Scanner; Scanner java.util class Main {
    public static void main(String args[]) {
        Scanner scan = new Scanner(System.in);
        int[] num = new int['z' - 'a' + 1];
        while (scan.hasNext()) {
            char[] chars = scan.next().toLowerCase().toCharArray();
            for (char ch : chars) {
                if (Character.isLetter(ch)) {
                    num[ch - 'a']++;
                }
            }
        }
        for (int i = 0; i < num.length; i++) {
            System.out.printf("%c : %d\n", (char)('a' + i), num[i]);
        }
    }
} Main public static void main(String args[]) {
        Scanner scan = new Scanner(System.in);
        int[] num = new int['z' - 'a' + 1];
        while (scan.hasNext()) {
            char[] chars = scan.next().toLowerCase().toCharArray();
            for (char ch : chars) {
                if (Character.isLetter(ch)) {
                    num[ch - 'a']++;
                }
            }
        }
        for (int i = 0; i < num.length; i++) {
            System.out.printf("%c : %d\n", (char)('a' + i), num[i]);
        }
    } main {
        Scanner scan = new Scanner(System.in);
        int[] num = new int['z' - 'a' + 1];
        while (scan.hasNext()) {
            char[] chars = scan.next().toLowerCase().toCharArray();
            for (char ch : chars) {
                if (Character.isLetter(ch)) {
                    num[ch - 'a']++;
                }
            }
        }
        for (int i = 0; i < num.length; i++) {
            System.out.printf("%c : %d\n", (char)('a' + i), num[i]);
        }
    } Scanner scan = new Scanner(System.in); scan new Scanner(System.in) int[] num = new int['z' - 'a' + 1]; num new int['z' - 'a' + 1] 'z' - 'a' + 1 'z' - 'a' 'z' 'a' 1 while (scan.hasNext()) {
            char[] chars = scan.next().toLowerCase().toCharArray();
            for (char ch : chars) {
                if (Character.isLetter(ch)) {
                    num[ch - 'a']++;
                }
            }
        } scan.hasNext() scan.hasNext scan {
            char[] chars = scan.next().toLowerCase().toCharArray();
            for (char ch : chars) {
                if (Character.isLetter(ch)) {
                    num[ch - 'a']++;
                }
            }
        } char[] chars = scan.next().toLowerCase().toCharArray(); chars scan.next().toLowerCase().toCharArray() scan.next().toLowerCase().toCharArray scan.next().toLowerCase() scan.next().toLowerCase scan.next() scan.next scan for (char ch : chars) {
                if (Character.isLetter(ch)) {
                    num[ch - 'a']++;
                }
            } char ch chars {
                if (Character.isLetter(ch)) {
                    num[ch - 'a']++;
                }
            } {
                if (Character.isLetter(ch)) {
                    num[ch - 'a']++;
                }
            } if (Character.isLetter(ch)) {
                    num[ch - 'a']++;
                } Character.isLetter(ch) Character.isLetter Character ch {
                    num[ch - 'a']++;
                } num[ch - 'a']++ num[ch - 'a'] num ch - 'a' ch 'a' for (int i = 0; i < num.length; i++) {
            System.out.printf("%c : %d\n", (char)('a' + i), num[i]);
        } int i = 0; int i = 0; i 0 i < num.length i num.length num num.length i++ i++ i {
            System.out.printf("%c : %d\n", (char)('a' + i), num[i]);
        } {
            System.out.printf("%c : %d\n", (char)('a' + i), num[i]);
        } System.out.printf("%c : %d\n", (char)('a' + i), num[i]) System.out.printf System.out System System.out "%c : %d\n" (char)('a' + i) 'a' i num[i] num i String args[] args
import java.util.Scanner;
class Main {
    public static void main(String args[]) {
        Scanner scan = new Scanner(System.in);
        int[] num = new int['z' - 'a' + 1];
        while (scan.hasNext()) {
            char[] chars = scan.next().toLowerCase().toCharArray();
            for (char ch : chars) {
                if (Character.isLetter(ch)) {
                    num[ch - 'a']++;
                }
            }
        }
        for (int i = 0; i < num.length; i++) {
            System.out.printf("%c : %d\n", (char)('a' + i), num[i]);
        }
    }
}