import java.util.Scanner;

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


        int[] result = new int[26];
        for (int i = 0; i < result.length; i++) {
            result[i] = 0;
        }

        while(sc.hasNext()){
            String input = sc.nextLine();
            for (int i = 0; i < input.length(); i++) {
                char ch = input.charAt(i);
                String str = String.valueOf(ch);
                str = str.toLowerCase();
                ch = str.charAt(0);

                for (char c = 'a'; c <= 'z'; c++) {
                    int index = c-'a';

                    if(ch == c){
                        result[index]++;
                    }

                }
            }
        }

        for (int i = 0; i < result.length; i++) {
            char alphabet = (char)(i+'a');
            System.out.println(alphabet + " : " + result[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);


        int[] result = new int[26];
        for (int i = 0; i < result.length; i++) {
            result[i] = 0;
        }

        while(sc.hasNext()){
            String input = sc.nextLine();
            for (int i = 0; i < input.length(); i++) {
                char ch = input.charAt(i);
                String str = String.valueOf(ch);
                str = str.toLowerCase();
                ch = str.charAt(0);

                for (char c = 'a'; c <= 'z'; c++) {
                    int index = c-'a';

                    if(ch == c){
                        result[index]++;
                    }

                }
            }
        }

        for (int i = 0; i < result.length; i++) {
            char alphabet = (char)(i+'a');
            System.out.println(alphabet + " : " + result[i]);
        }

        sc.close();
    }
} Main public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);


        int[] result = new int[26];
        for (int i = 0; i < result.length; i++) {
            result[i] = 0;
        }

        while(sc.hasNext()){
            String input = sc.nextLine();
            for (int i = 0; i < input.length(); i++) {
                char ch = input.charAt(i);
                String str = String.valueOf(ch);
                str = str.toLowerCase();
                ch = str.charAt(0);

                for (char c = 'a'; c <= 'z'; c++) {
                    int index = c-'a';

                    if(ch == c){
                        result[index]++;
                    }

                }
            }
        }

        for (int i = 0; i < result.length; i++) {
            char alphabet = (char)(i+'a');
            System.out.println(alphabet + " : " + result[i]);
        }

        sc.close();
    } main {
        Scanner sc = new Scanner(System.in);


        int[] result = new int[26];
        for (int i = 0; i < result.length; i++) {
            result[i] = 0;
        }

        while(sc.hasNext()){
            String input = sc.nextLine();
            for (int i = 0; i < input.length(); i++) {
                char ch = input.charAt(i);
                String str = String.valueOf(ch);
                str = str.toLowerCase();
                ch = str.charAt(0);

                for (char c = 'a'; c <= 'z'; c++) {
                    int index = c-'a';

                    if(ch == c){
                        result[index]++;
                    }

                }
            }
        }

        for (int i = 0; i < result.length; i++) {
            char alphabet = (char)(i+'a');
            System.out.println(alphabet + " : " + result[i]);
        }

        sc.close();
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int[] result = new int[26]; result new int[26] 26 for (int i = 0; i < result.length; i++) {
            result[i] = 0;
        } int i = 0; int i = 0; i 0 i < result.length i result.length result result.length i++ i++ i {
            result[i] = 0;
        } {
            result[i] = 0;
        } result[i] = 0 result[i] result i 0 while(sc.hasNext()){
            String input = sc.nextLine();
            for (int i = 0; i < input.length(); i++) {
                char ch = input.charAt(i);
                String str = String.valueOf(ch);
                str = str.toLowerCase();
                ch = str.charAt(0);

                for (char c = 'a'; c <= 'z'; c++) {
                    int index = c-'a';

                    if(ch == c){
                        result[index]++;
                    }

                }
            }
        } sc.hasNext() sc.hasNext sc {
            String input = sc.nextLine();
            for (int i = 0; i < input.length(); i++) {
                char ch = input.charAt(i);
                String str = String.valueOf(ch);
                str = str.toLowerCase();
                ch = str.charAt(0);

                for (char c = 'a'; c <= 'z'; c++) {
                    int index = c-'a';

                    if(ch == c){
                        result[index]++;
                    }

                }
            }
        } String input = sc.nextLine(); input sc.nextLine() sc.nextLine sc for (int i = 0; i < input.length(); i++) {
                char ch = input.charAt(i);
                String str = String.valueOf(ch);
                str = str.toLowerCase();
                ch = str.charAt(0);

                for (char c = 'a'; c <= 'z'; c++) {
                    int index = c-'a';

                    if(ch == c){
                        result[index]++;
                    }

                }
            } int i = 0; int i = 0; i 0 i < input.length() i input.length() input.length input i++ i++ i {
                char ch = input.charAt(i);
                String str = String.valueOf(ch);
                str = str.toLowerCase();
                ch = str.charAt(0);

                for (char c = 'a'; c <= 'z'; c++) {
                    int index = c-'a';

                    if(ch == c){
                        result[index]++;
                    }

                }
            } {
                char ch = input.charAt(i);
                String str = String.valueOf(ch);
                str = str.toLowerCase();
                ch = str.charAt(0);

                for (char c = 'a'; c <= 'z'; c++) {
                    int index = c-'a';

                    if(ch == c){
                        result[index]++;
                    }

                }
            } char ch = input.charAt(i); ch input.charAt(i) input.charAt input i String str = String.valueOf(ch); str String.valueOf(ch) String.valueOf String ch str = str.toLowerCase() str str.toLowerCase() str.toLowerCase str ch = str.charAt(0) ch str.charAt(0) str.charAt str 0 for (char c = 'a'; c <= 'z'; c++) {
                    int index = c-'a';

                    if(ch == c){
                        result[index]++;
                    }

                } char c = 'a'; char c = 'a'; c 'a' c <= 'z' c 'z' c++ c++ c {
                    int index = c-'a';

                    if(ch == c){
                        result[index]++;
                    }

                } {
                    int index = c-'a';

                    if(ch == c){
                        result[index]++;
                    }

                } int index = c-'a'; index c-'a' c 'a' if(ch == c){
                        result[index]++;
                    } ch == c ch c {
                        result[index]++;
                    } result[index]++ result[index] result index for (int i = 0; i < result.length; i++) {
            char alphabet = (char)(i+'a');
            System.out.println(alphabet + " : " + result[i]);
        } int i = 0; int i = 0; i 0 i < result.length i result.length result result.length i++ i++ i {
            char alphabet = (char)(i+'a');
            System.out.println(alphabet + " : " + result[i]);
        } {
            char alphabet = (char)(i+'a');
            System.out.println(alphabet + " : " + result[i]);
        } char alphabet = (char)(i+'a'); alphabet (char)(i+'a') i 'a' System.out.println(alphabet + " : " + result[i]) System.out.println System.out System System.out alphabet + " : " + result[i] alphabet + " : " + result[i] alphabet " : " result[i] result i sc.close() sc.close sc String[] args args public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);


        int[] result = new int[26];
        for (int i = 0; i < result.length; i++) {
            result[i] = 0;
        }

        while(sc.hasNext()){
            String input = sc.nextLine();
            for (int i = 0; i < input.length(); i++) {
                char ch = input.charAt(i);
                String str = String.valueOf(ch);
                str = str.toLowerCase();
                ch = str.charAt(0);

                for (char c = 'a'; c <= 'z'; c++) {
                    int index = c-'a';

                    if(ch == c){
                        result[index]++;
                    }

                }
            }
        }

        for (int i = 0; i < result.length; i++) {
            char alphabet = (char)(i+'a');
            System.out.println(alphabet + " : " + result[i]);
        }

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


        int[] result = new int[26];
        for (int i = 0; i < result.length; i++) {
            result[i] = 0;
        }

        while(sc.hasNext()){
            String input = sc.nextLine();
            for (int i = 0; i < input.length(); i++) {
                char ch = input.charAt(i);
                String str = String.valueOf(ch);
                str = str.toLowerCase();
                ch = str.charAt(0);

                for (char c = 'a'; c <= 'z'; c++) {
                    int index = c-'a';

                    if(ch == c){
                        result[index]++;
                    }

                }
            }
        }

        for (int i = 0; i < result.length; i++) {
            char alphabet = (char)(i+'a');
            System.out.println(alphabet + " : " + result[i]);
        }

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

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


        int[] result = new int[26];
        for (int i = 0; i < result.length; i++) {
            result[i] = 0;
        }

        while(sc.hasNext()){
            String input = sc.nextLine();
            for (int i = 0; i < input.length(); i++) {
                char ch = input.charAt(i);
                String str = String.valueOf(ch);
                str = str.toLowerCase();
                ch = str.charAt(0);

                for (char c = 'a'; c <= 'z'; c++) {
                    int index = c-'a';

                    if(ch == c){
                        result[index]++;
                    }

                }
            }
        }

        for (int i = 0; i < result.length; i++) {
            char alphabet = (char)(i+'a');
            System.out.println(alphabet + " : " + result[i]);
        }

        sc.close();
    }
}
