import java.util.Scanner;

class Main{
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String str;
        int i,num;
        int[] count = new int[26];
        for(i=0;i<26;i++) count[i] = 0;
        while(sc.hasNext()){
            str = sc.nextLine().replace(" ","");
            str = str.replace(".","");
            str = str.replace("\n","");
            str = str.toLowerCase();
            for(i=0;i<str.length();i++){
                if(str.charAt(i)-97>=0&&str.charAt(i)-97<26) count[(int)str.charAt(i)-97]++;
            }
        }
        for(i=0;i<26;i++){
            System.out.println((char)('a'+i) + " : " + count[i]);
        }
    }
} import java.util.Scanner; Scanner java.util class Main{
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String str;
        int i,num;
        int[] count = new int[26];
        for(i=0;i<26;i++) count[i] = 0;
        while(sc.hasNext()){
            str = sc.nextLine().replace(" ","");
            str = str.replace(".","");
            str = str.replace("\n","");
            str = str.toLowerCase();
            for(i=0;i<str.length();i++){
                if(str.charAt(i)-97>=0&&str.charAt(i)-97<26) count[(int)str.charAt(i)-97]++;
            }
        }
        for(i=0;i<26;i++){
            System.out.println((char)('a'+i) + " : " + count[i]);
        }
    }
} Main public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String str;
        int i,num;
        int[] count = new int[26];
        for(i=0;i<26;i++) count[i] = 0;
        while(sc.hasNext()){
            str = sc.nextLine().replace(" ","");
            str = str.replace(".","");
            str = str.replace("\n","");
            str = str.toLowerCase();
            for(i=0;i<str.length();i++){
                if(str.charAt(i)-97>=0&&str.charAt(i)-97<26) count[(int)str.charAt(i)-97]++;
            }
        }
        for(i=0;i<26;i++){
            System.out.println((char)('a'+i) + " : " + count[i]);
        }
    } main {
        Scanner sc = new Scanner(System.in);
        String str;
        int i,num;
        int[] count = new int[26];
        for(i=0;i<26;i++) count[i] = 0;
        while(sc.hasNext()){
            str = sc.nextLine().replace(" ","");
            str = str.replace(".","");
            str = str.replace("\n","");
            str = str.toLowerCase();
            for(i=0;i<str.length();i++){
                if(str.charAt(i)-97>=0&&str.charAt(i)-97<26) count[(int)str.charAt(i)-97]++;
            }
        }
        for(i=0;i<26;i++){
            System.out.println((char)('a'+i) + " : " + count[i]);
        }
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String str; str int i i num; num int[] count = new int[26]; count new int[26] 26 for(i=0;i<26;i++) count[i] = 0; i=0; i=0 i 0 i<26 i 26 i++ i++ i count[i] = 0; count[i] = 0 count[i] count i 0 while(sc.hasNext()){
            str = sc.nextLine().replace(" ","");
            str = str.replace(".","");
            str = str.replace("\n","");
            str = str.toLowerCase();
            for(i=0;i<str.length();i++){
                if(str.charAt(i)-97>=0&&str.charAt(i)-97<26) count[(int)str.charAt(i)-97]++;
            }
        } sc.hasNext() sc.hasNext sc {
            str = sc.nextLine().replace(" ","");
            str = str.replace(".","");
            str = str.replace("\n","");
            str = str.toLowerCase();
            for(i=0;i<str.length();i++){
                if(str.charAt(i)-97>=0&&str.charAt(i)-97<26) count[(int)str.charAt(i)-97]++;
            }
        } str = sc.nextLine().replace(" ","") str sc.nextLine().replace(" ","") sc.nextLine().replace sc.nextLine() sc.nextLine sc " " "" str = str.replace(".","") str str.replace(".","") str.replace str "." "" str = str.replace("\n","") str str.replace("\n","") str.replace str "\n" "" str = str.toLowerCase() str str.toLowerCase() str.toLowerCase str for(i=0;i<str.length();i++){
                if(str.charAt(i)-97>=0&&str.charAt(i)-97<26) count[(int)str.charAt(i)-97]++;
            } i=0; i=0 i 0 i<str.length() i str.length() str.length str i++ i++ i {
                if(str.charAt(i)-97>=0&&str.charAt(i)-97<26) count[(int)str.charAt(i)-97]++;
            } {
                if(str.charAt(i)-97>=0&&str.charAt(i)-97<26) count[(int)str.charAt(i)-97]++;
            } if(str.charAt(i)-97>=0&&str.charAt(i)-97<26) count[(int)str.charAt(i)-97]++; str.charAt(i)-97>=0&&str.charAt(i)-97<26 str.charAt(i)-97>=0 str.charAt(i)-97 str.charAt(i) str.charAt str i 97 0 str.charAt(i)-97<26 str.charAt(i)-97 str.charAt(i) str.charAt str i 97 26 count[(int)str.charAt(i)-97]++ count[(int)str.charAt(i)-97] count (int)str.charAt(i)-97 (int)str.charAt(i) str.charAt str i 97 for(i=0;i<26;i++){
            System.out.println((char)('a'+i) + " : " + count[i]);
        } i=0; i=0 i 0 i<26 i 26 i++ i++ i {
            System.out.println((char)('a'+i) + " : " + count[i]);
        } {
            System.out.println((char)('a'+i) + " : " + count[i]);
        } System.out.println((char)('a'+i) + " : " + count[i]) System.out.println System.out System System.out (char)('a'+i) + " : " + count[i] (char)('a'+i) + " : " + count[i] (char)('a'+i) 'a' i " : " count[i] count i String[] args args
import java.util.Scanner;

class Main{
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String str;
        int i,num;
        int[] count = new int[26];
        for(i=0;i<26;i++) count[i] = 0;
        while(sc.hasNext()){
            str = sc.nextLine().replace(" ","");
            str = str.replace(".","");
            str = str.replace("\n","");
            str = str.toLowerCase();
            for(i=0;i<str.length();i++){
                if(str.charAt(i)-97>=0&&str.charAt(i)-97<26) count[(int)str.charAt(i)-97]++;
            }
        }
        for(i=0;i<26;i++){
            System.out.println((char)('a'+i) + " : " + count[i]);
        }
    }
}
