import java.util.Scanner;

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

        int[] n = new int[26];
        while(scan.hasNext()) {
            String S = scan.nextLine();
            String s = S.toUpperCase();
            for(int i = 0; i < s.length(); i++) {
                int k = (int)s.charAt(i) - 65;
                if(k >= 0 && k <= 25) {
                    n[k]++;
                }
            }
        }

        for(int i = 0; i < 26; i++) {
            int ch = i + 97;
            char c = (char)ch;
            System.out.println(c + " : " + n[i]);
        }
    }
}

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

        int[] n = new int[26];
        while(scan.hasNext()) {
            String S = scan.nextLine();
            String s = S.toUpperCase();
            for(int i = 0; i < s.length(); i++) {
                int k = (int)s.charAt(i) - 65;
                if(k >= 0 && k <= 25) {
                    n[k]++;
                }
            }
        }

        for(int i = 0; i < 26; i++) {
            int ch = i + 97;
            char c = (char)ch;
            System.out.println(c + " : " + n[i]);
        }
    }
} Main public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);

        int[] n = new int[26];
        while(scan.hasNext()) {
            String S = scan.nextLine();
            String s = S.toUpperCase();
            for(int i = 0; i < s.length(); i++) {
                int k = (int)s.charAt(i) - 65;
                if(k >= 0 && k <= 25) {
                    n[k]++;
                }
            }
        }

        for(int i = 0; i < 26; i++) {
            int ch = i + 97;
            char c = (char)ch;
            System.out.println(c + " : " + n[i]);
        }
    } main {
        Scanner scan = new Scanner(System.in);

        int[] n = new int[26];
        while(scan.hasNext()) {
            String S = scan.nextLine();
            String s = S.toUpperCase();
            for(int i = 0; i < s.length(); i++) {
                int k = (int)s.charAt(i) - 65;
                if(k >= 0 && k <= 25) {
                    n[k]++;
                }
            }
        }

        for(int i = 0; i < 26; i++) {
            int ch = i + 97;
            char c = (char)ch;
            System.out.println(c + " : " + n[i]);
        }
    } Scanner scan = new Scanner(System.in); scan new Scanner(System.in) int[] n = new int[26]; n new int[26] 26 while(scan.hasNext()) {
            String S = scan.nextLine();
            String s = S.toUpperCase();
            for(int i = 0; i < s.length(); i++) {
                int k = (int)s.charAt(i) - 65;
                if(k >= 0 && k <= 25) {
                    n[k]++;
                }
            }
        } scan.hasNext() scan.hasNext scan {
            String S = scan.nextLine();
            String s = S.toUpperCase();
            for(int i = 0; i < s.length(); i++) {
                int k = (int)s.charAt(i) - 65;
                if(k >= 0 && k <= 25) {
                    n[k]++;
                }
            }
        } String S = scan.nextLine(); S scan.nextLine() scan.nextLine scan String s = S.toUpperCase(); s S.toUpperCase() S.toUpperCase S for(int i = 0; i < s.length(); i++) {
                int k = (int)s.charAt(i) - 65;
                if(k >= 0 && k <= 25) {
                    n[k]++;
                }
            } int i = 0; int i = 0; i 0 i < s.length() i s.length() s.length s i++ i++ i {
                int k = (int)s.charAt(i) - 65;
                if(k >= 0 && k <= 25) {
                    n[k]++;
                }
            } {
                int k = (int)s.charAt(i) - 65;
                if(k >= 0 && k <= 25) {
                    n[k]++;
                }
            } int k = (int)s.charAt(i) - 65; k (int)s.charAt(i) - 65 (int)s.charAt(i) s.charAt s i 65 if(k >= 0 && k <= 25) {
                    n[k]++;
                } k >= 0 && k <= 25 k >= 0 k 0 k <= 25 k 25 {
                    n[k]++;
                } n[k]++ n[k] n k for(int i = 0; i < 26; i++) {
            int ch = i + 97;
            char c = (char)ch;
            System.out.println(c + " : " + n[i]);
        } int i = 0; int i = 0; i 0 i < 26 i 26 i++ i++ i {
            int ch = i + 97;
            char c = (char)ch;
            System.out.println(c + " : " + n[i]);
        } {
            int ch = i + 97;
            char c = (char)ch;
            System.out.println(c + " : " + n[i]);
        } int ch = i + 97; ch i + 97 i 97 char c = (char)ch; c (char)ch System.out.println(c + " : " + n[i]) System.out.println System.out System System.out c + " : " + n[i] c + " : " + n[i] c " : " n[i] n i String[] args args public class Main{
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);

        int[] n = new int[26];
        while(scan.hasNext()) {
            String S = scan.nextLine();
            String s = S.toUpperCase();
            for(int i = 0; i < s.length(); i++) {
                int k = (int)s.charAt(i) - 65;
                if(k >= 0 && k <= 25) {
                    n[k]++;
                }
            }
        }

        for(int i = 0; i < 26; i++) {
            int ch = i + 97;
            char c = (char)ch;
            System.out.println(c + " : " + n[i]);
        }
    }
} public class Main{
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);

        int[] n = new int[26];
        while(scan.hasNext()) {
            String S = scan.nextLine();
            String s = S.toUpperCase();
            for(int i = 0; i < s.length(); i++) {
                int k = (int)s.charAt(i) - 65;
                if(k >= 0 && k <= 25) {
                    n[k]++;
                }
            }
        }

        for(int i = 0; i < 26; i++) {
            int ch = i + 97;
            char c = (char)ch;
            System.out.println(c + " : " + n[i]);
        }
    }
} Main
import java.util.Scanner;

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

        int[] n = new int[26];
        while(scan.hasNext()) {
            String S = scan.nextLine();
            String s = S.toUpperCase();
            for(int i = 0; i < s.length(); i++) {
                int k = (int)s.charAt(i) - 65;
                if(k >= 0 && k <= 25) {
                    n[k]++;
                }
            }
        }

        for(int i = 0; i < 26; i++) {
            int ch = i + 97;
            char c = (char)ch;
            System.out.println(c + " : " + n[i]);
        }
    }
}


