import java.util.Scanner;

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        int[] count = new int[26];
        int num = 'a';
        while(sc.hasNext()){
            String str = sc.nextLine();
            char[] cha = str.toCharArray();
            for(char alp:cha){
                if(!Character.isAlphabetic(alp)){
                    continue;
                }
                alp = Character.toLowerCase(alp);
                count[alp-num]++;
            }
        }
        for(int i = 0; i < count.length; i++){
            System.out.print(Character.toChars(num+i));
            System.out.println(" : "+count[i]);
        }
    }
} import java.util.Scanner; Scanner java.util public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        int[] count = new int[26];
        int num = 'a';
        while(sc.hasNext()){
            String str = sc.nextLine();
            char[] cha = str.toCharArray();
            for(char alp:cha){
                if(!Character.isAlphabetic(alp)){
                    continue;
                }
                alp = Character.toLowerCase(alp);
                count[alp-num]++;
            }
        }
        for(int i = 0; i < count.length; i++){
            System.out.print(Character.toChars(num+i));
            System.out.println(" : "+count[i]);
        }
    }
} Main public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        int[] count = new int[26];
        int num = 'a';
        while(sc.hasNext()){
            String str = sc.nextLine();
            char[] cha = str.toCharArray();
            for(char alp:cha){
                if(!Character.isAlphabetic(alp)){
                    continue;
                }
                alp = Character.toLowerCase(alp);
                count[alp-num]++;
            }
        }
        for(int i = 0; i < count.length; i++){
            System.out.print(Character.toChars(num+i));
            System.out.println(" : "+count[i]);
        }
    } main {
        Scanner sc = new Scanner(System.in);
        int[] count = new int[26];
        int num = 'a';
        while(sc.hasNext()){
            String str = sc.nextLine();
            char[] cha = str.toCharArray();
            for(char alp:cha){
                if(!Character.isAlphabetic(alp)){
                    continue;
                }
                alp = Character.toLowerCase(alp);
                count[alp-num]++;
            }
        }
        for(int i = 0; i < count.length; i++){
            System.out.print(Character.toChars(num+i));
            System.out.println(" : "+count[i]);
        }
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int[] count = new int[26]; count new int[26] 26 int num = 'a'; num 'a' while(sc.hasNext()){
            String str = sc.nextLine();
            char[] cha = str.toCharArray();
            for(char alp:cha){
                if(!Character.isAlphabetic(alp)){
                    continue;
                }
                alp = Character.toLowerCase(alp);
                count[alp-num]++;
            }
        } sc.hasNext() sc.hasNext sc {
            String str = sc.nextLine();
            char[] cha = str.toCharArray();
            for(char alp:cha){
                if(!Character.isAlphabetic(alp)){
                    continue;
                }
                alp = Character.toLowerCase(alp);
                count[alp-num]++;
            }
        } String str = sc.nextLine(); str sc.nextLine() sc.nextLine sc char[] cha = str.toCharArray(); cha str.toCharArray() str.toCharArray str for(char alp:cha){
                if(!Character.isAlphabetic(alp)){
                    continue;
                }
                alp = Character.toLowerCase(alp);
                count[alp-num]++;
            } char alp cha {
                if(!Character.isAlphabetic(alp)){
                    continue;
                }
                alp = Character.toLowerCase(alp);
                count[alp-num]++;
            } {
                if(!Character.isAlphabetic(alp)){
                    continue;
                }
                alp = Character.toLowerCase(alp);
                count[alp-num]++;
            } if(!Character.isAlphabetic(alp)){
                    continue;
                } !Character.isAlphabetic(alp) Character.isAlphabetic(alp) Character.isAlphabetic Character alp {
                    continue;
                } continue; alp = Character.toLowerCase(alp) alp Character.toLowerCase(alp) Character.toLowerCase Character alp count[alp-num]++ count[alp-num] count alp-num alp num for(int i = 0; i < count.length; i++){
            System.out.print(Character.toChars(num+i));
            System.out.println(" : "+count[i]);
        } int i = 0; int i = 0; i 0 i < count.length i count.length count count.length i++ i++ i {
            System.out.print(Character.toChars(num+i));
            System.out.println(" : "+count[i]);
        } {
            System.out.print(Character.toChars(num+i));
            System.out.println(" : "+count[i]);
        } System.out.print(Character.toChars(num+i)) System.out.print System.out System System.out Character.toChars(num+i) Character.toChars Character num+i num i System.out.println(" : "+count[i]) System.out.println System.out System System.out " : "+count[i] " : " count[i] count i String[] args args public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        int[] count = new int[26];
        int num = 'a';
        while(sc.hasNext()){
            String str = sc.nextLine();
            char[] cha = str.toCharArray();
            for(char alp:cha){
                if(!Character.isAlphabetic(alp)){
                    continue;
                }
                alp = Character.toLowerCase(alp);
                count[alp-num]++;
            }
        }
        for(int i = 0; i < count.length; i++){
            System.out.print(Character.toChars(num+i));
            System.out.println(" : "+count[i]);
        }
    }
} public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        int[] count = new int[26];
        int num = 'a';
        while(sc.hasNext()){
            String str = sc.nextLine();
            char[] cha = str.toCharArray();
            for(char alp:cha){
                if(!Character.isAlphabetic(alp)){
                    continue;
                }
                alp = Character.toLowerCase(alp);
                count[alp-num]++;
            }
        }
        for(int i = 0; i < count.length; i++){
            System.out.print(Character.toChars(num+i));
            System.out.println(" : "+count[i]);
        }
    }
} Main
import java.util.Scanner;

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        int[] count = new int[26];
        int num = 'a';
        while(sc.hasNext()){
            String str = sc.nextLine();
            char[] cha = str.toCharArray();
            for(char alp:cha){
                if(!Character.isAlphabetic(alp)){
                    continue;
                }
                alp = Character.toLowerCase(alp);
                count[alp-num]++;
            }
        }
        for(int i = 0; i < count.length; i++){
            System.out.print(Character.toChars(num+i));
            System.out.println(" : "+count[i]);
        }
    }
}