import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.HashMap;

public class Main {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        HashMap<Character,Integer> map = new HashMap<>();
        for(int i=0;i<26;i++){
            map.put((char)('a'+i),0);
        }
        String str,str1;
        while((str = br.readLine())!=null){
            str1 = str.toLowerCase();
            for(int i=0;i<str1.length();i++){
                char c = str1.charAt(i);
                if(map.containsKey(c)){
                    map.put(c,map.get(c)+1);
                }
            }
        }
        for(HashMap.Entry<Character,Integer> entry:map.entrySet()){
            System.out.println(entry.getKey()+" : "+entry.getValue());
        }
    }
} import java.io.BufferedReader; BufferedReader java.io import java.io.IOException; IOException java.io import java.io.InputStreamReader; InputStreamReader java.io import java.util.HashMap; HashMap java.util public class Main {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        HashMap<Character,Integer> map = new HashMap<>();
        for(int i=0;i<26;i++){
            map.put((char)('a'+i),0);
        }
        String str,str1;
        while((str = br.readLine())!=null){
            str1 = str.toLowerCase();
            for(int i=0;i<str1.length();i++){
                char c = str1.charAt(i);
                if(map.containsKey(c)){
                    map.put(c,map.get(c)+1);
                }
            }
        }
        for(HashMap.Entry<Character,Integer> entry:map.entrySet()){
            System.out.println(entry.getKey()+" : "+entry.getValue());
        }
    }
} Main public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        HashMap<Character,Integer> map = new HashMap<>();
        for(int i=0;i<26;i++){
            map.put((char)('a'+i),0);
        }
        String str,str1;
        while((str = br.readLine())!=null){
            str1 = str.toLowerCase();
            for(int i=0;i<str1.length();i++){
                char c = str1.charAt(i);
                if(map.containsKey(c)){
                    map.put(c,map.get(c)+1);
                }
            }
        }
        for(HashMap.Entry<Character,Integer> entry:map.entrySet()){
            System.out.println(entry.getKey()+" : "+entry.getValue());
        }
    } main {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        HashMap<Character,Integer> map = new HashMap<>();
        for(int i=0;i<26;i++){
            map.put((char)('a'+i),0);
        }
        String str,str1;
        while((str = br.readLine())!=null){
            str1 = str.toLowerCase();
            for(int i=0;i<str1.length();i++){
                char c = str1.charAt(i);
                if(map.containsKey(c)){
                    map.put(c,map.get(c)+1);
                }
            }
        }
        for(HashMap.Entry<Character,Integer> entry:map.entrySet()){
            System.out.println(entry.getKey()+" : "+entry.getValue());
        }
    } BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); br new BufferedReader(new InputStreamReader(System.in)) HashMap<Character,Integer> map = new HashMap<>(); map new HashMap<>() for(int i=0;i<26;i++){
            map.put((char)('a'+i),0);
        } int i=0; int i=0; i 0 i<26 i 26 i++ i++ i {
            map.put((char)('a'+i),0);
        } {
            map.put((char)('a'+i),0);
        } map.put((char)('a'+i),0) map.put map (char)('a'+i) 'a' i 0 String str str str1; str1 while((str = br.readLine())!=null){
            str1 = str.toLowerCase();
            for(int i=0;i<str1.length();i++){
                char c = str1.charAt(i);
                if(map.containsKey(c)){
                    map.put(c,map.get(c)+1);
                }
            }
        } (str = br.readLine())!=null (str = br.readLine()) str br.readLine() br.readLine br null {
            str1 = str.toLowerCase();
            for(int i=0;i<str1.length();i++){
                char c = str1.charAt(i);
                if(map.containsKey(c)){
                    map.put(c,map.get(c)+1);
                }
            }
        } str1 = str.toLowerCase() str1 str.toLowerCase() str.toLowerCase str for(int i=0;i<str1.length();i++){
                char c = str1.charAt(i);
                if(map.containsKey(c)){
                    map.put(c,map.get(c)+1);
                }
            } int i=0; int i=0; i 0 i<str1.length() i str1.length() str1.length str1 i++ i++ i {
                char c = str1.charAt(i);
                if(map.containsKey(c)){
                    map.put(c,map.get(c)+1);
                }
            } {
                char c = str1.charAt(i);
                if(map.containsKey(c)){
                    map.put(c,map.get(c)+1);
                }
            } char c = str1.charAt(i); c str1.charAt(i) str1.charAt str1 i if(map.containsKey(c)){
                    map.put(c,map.get(c)+1);
                } map.containsKey(c) map.containsKey map c {
                    map.put(c,map.get(c)+1);
                } map.put(c,map.get(c)+1) map.put map c map.get(c)+1 map.get(c) map.get map c 1 for(HashMap.Entry<Character,Integer> entry:map.entrySet()){
            System.out.println(entry.getKey()+" : "+entry.getValue());
        } HashMap.Entry<Character,Integer> entry map.entrySet() map.entrySet map {
            System.out.println(entry.getKey()+" : "+entry.getValue());
        } {
            System.out.println(entry.getKey()+" : "+entry.getValue());
        } System.out.println(entry.getKey()+" : "+entry.getValue()) System.out.println System.out System System.out entry.getKey()+" : "+entry.getValue() entry.getKey()+" : "+entry.getValue() entry.getKey() entry.getKey entry " : " entry.getValue() entry.getValue entry String[] args args public class Main {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        HashMap<Character,Integer> map = new HashMap<>();
        for(int i=0;i<26;i++){
            map.put((char)('a'+i),0);
        }
        String str,str1;
        while((str = br.readLine())!=null){
            str1 = str.toLowerCase();
            for(int i=0;i<str1.length();i++){
                char c = str1.charAt(i);
                if(map.containsKey(c)){
                    map.put(c,map.get(c)+1);
                }
            }
        }
        for(HashMap.Entry<Character,Integer> entry:map.entrySet()){
            System.out.println(entry.getKey()+" : "+entry.getValue());
        }
    }
} public class Main {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        HashMap<Character,Integer> map = new HashMap<>();
        for(int i=0;i<26;i++){
            map.put((char)('a'+i),0);
        }
        String str,str1;
        while((str = br.readLine())!=null){
            str1 = str.toLowerCase();
            for(int i=0;i<str1.length();i++){
                char c = str1.charAt(i);
                if(map.containsKey(c)){
                    map.put(c,map.get(c)+1);
                }
            }
        }
        for(HashMap.Entry<Character,Integer> entry:map.entrySet()){
            System.out.println(entry.getKey()+" : "+entry.getValue());
        }
    }
} Main
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.HashMap;

public class Main {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        HashMap<Character,Integer> map = new HashMap<>();
        for(int i=0;i<26;i++){
            map.put((char)('a'+i),0);
        }
        String str,str1;
        while((str = br.readLine())!=null){
            str1 = str.toLowerCase();
            for(int i=0;i<str1.length();i++){
                char c = str1.charAt(i);
                if(map.containsKey(c)){
                    map.put(c,map.get(c)+1);
                }
            }
        }
        for(HashMap.Entry<Character,Integer> entry:map.entrySet()){
            System.out.println(entry.getKey()+" : "+entry.getValue());
        }
    }
}