import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        try(Scanner sc = new Scanner(System.in)){
            int counter[] = new int[128];
            while(sc.hasNext()) {
                String s = sc.nextLine().toLowerCase();
                for (int i = 0; i < s.length(); i++) {
                    int num = s.charAt(i);
                    counter[num]++;
                }
            }
            for(char i = 'a'; i <= 'z'; i++) {
                System.out.printf("%s : %d\n", i, counter[i]);
            }
        }
    }
} import java.util.Scanner; Scanner java.util public class Main {
    public static void main(String[] args) {
        try(Scanner sc = new Scanner(System.in)){
            int counter[] = new int[128];
            while(sc.hasNext()) {
                String s = sc.nextLine().toLowerCase();
                for (int i = 0; i < s.length(); i++) {
                    int num = s.charAt(i);
                    counter[num]++;
                }
            }
            for(char i = 'a'; i <= 'z'; i++) {
                System.out.printf("%s : %d\n", i, counter[i]);
            }
        }
    }
} Main public static void main(String[] args) {
        try(Scanner sc = new Scanner(System.in)){
            int counter[] = new int[128];
            while(sc.hasNext()) {
                String s = sc.nextLine().toLowerCase();
                for (int i = 0; i < s.length(); i++) {
                    int num = s.charAt(i);
                    counter[num]++;
                }
            }
            for(char i = 'a'; i <= 'z'; i++) {
                System.out.printf("%s : %d\n", i, counter[i]);
            }
        }
    } main {
        try(Scanner sc = new Scanner(System.in)){
            int counter[] = new int[128];
            while(sc.hasNext()) {
                String s = sc.nextLine().toLowerCase();
                for (int i = 0; i < s.length(); i++) {
                    int num = s.charAt(i);
                    counter[num]++;
                }
            }
            for(char i = 'a'; i <= 'z'; i++) {
                System.out.printf("%s : %d\n", i, counter[i]);
            }
        }
    } try(Scanner sc = new Scanner(System.in)){
            int counter[] = new int[128];
            while(sc.hasNext()) {
                String s = sc.nextLine().toLowerCase();
                for (int i = 0; i < s.length(); i++) {
                    int num = s.charAt(i);
                    counter[num]++;
                }
            }
            for(char i = 'a'; i <= 'z'; i++) {
                System.out.printf("%s : %d\n", i, counter[i]);
            }
        } {
            int counter[] = new int[128];
            while(sc.hasNext()) {
                String s = sc.nextLine().toLowerCase();
                for (int i = 0; i < s.length(); i++) {
                    int num = s.charAt(i);
                    counter[num]++;
                }
            }
            for(char i = 'a'; i <= 'z'; i++) {
                System.out.printf("%s : %d\n", i, counter[i]);
            }
        } Scanner sc = new Scanner(System.in) Scanner sc = new Scanner(System.in) new Scanner(System.in) int counter[] = new int[128]; counter new int[128] 128 while(sc.hasNext()) {
                String s = sc.nextLine().toLowerCase();
                for (int i = 0; i < s.length(); i++) {
                    int num = s.charAt(i);
                    counter[num]++;
                }
            } sc.hasNext() sc.hasNext sc {
                String s = sc.nextLine().toLowerCase();
                for (int i = 0; i < s.length(); i++) {
                    int num = s.charAt(i);
                    counter[num]++;
                }
            } String s = sc.nextLine().toLowerCase(); s sc.nextLine().toLowerCase() sc.nextLine().toLowerCase sc.nextLine() sc.nextLine sc for (int i = 0; i < s.length(); i++) {
                    int num = s.charAt(i);
                    counter[num]++;
                } int i = 0; int i = 0; i 0 i < s.length() i s.length() s.length s i++ i++ i {
                    int num = s.charAt(i);
                    counter[num]++;
                } {
                    int num = s.charAt(i);
                    counter[num]++;
                } int num = s.charAt(i); num s.charAt(i) s.charAt s i counter[num]++ counter[num] counter num for(char i = 'a'; i <= 'z'; i++) {
                System.out.printf("%s : %d\n", i, counter[i]);
            } char i = 'a'; char i = 'a'; i 'a' i <= 'z' i 'z' i++ i++ i {
                System.out.printf("%s : %d\n", i, counter[i]);
            } {
                System.out.printf("%s : %d\n", i, counter[i]);
            } System.out.printf("%s : %d\n", i, counter[i]) System.out.printf System.out System System.out "%s : %d\n" i counter[i] counter i String[] args args public class Main {
    public static void main(String[] args) {
        try(Scanner sc = new Scanner(System.in)){
            int counter[] = new int[128];
            while(sc.hasNext()) {
                String s = sc.nextLine().toLowerCase();
                for (int i = 0; i < s.length(); i++) {
                    int num = s.charAt(i);
                    counter[num]++;
                }
            }
            for(char i = 'a'; i <= 'z'; i++) {
                System.out.printf("%s : %d\n", i, counter[i]);
            }
        }
    }
} public class Main {
    public static void main(String[] args) {
        try(Scanner sc = new Scanner(System.in)){
            int counter[] = new int[128];
            while(sc.hasNext()) {
                String s = sc.nextLine().toLowerCase();
                for (int i = 0; i < s.length(); i++) {
                    int num = s.charAt(i);
                    counter[num]++;
                }
            }
            for(char i = 'a'; i <= 'z'; i++) {
                System.out.printf("%s : %d\n", i, counter[i]);
            }
        }
    }
} Main
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        try(Scanner sc = new Scanner(System.in)){
            int counter[] = new int[128];
            while(sc.hasNext()) {
                String s = sc.nextLine().toLowerCase();
                for (int i = 0; i < s.length(); i++) {
                    int num = s.charAt(i);
                    counter[num]++;
                }
            }
            for(char i = 'a'; i <= 'z'; i++) {
                System.out.printf("%s : %d\n", i, counter[i]);
            }
        }
    }
}
