import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int[] counter = new int[27];
        int flag=0;
        while (sc.hasNext()) {
            String in = sc.nextLine();
           
            in=in.toLowerCase();
            for (int i = 0; i < in.length(); i++) {
          
                int value = in.charAt(i)-'a' ;
                if(value<0 || value>26){
                    continue;
                }
                if(value==-51){
                    flag=1;
                    break;
                }
           
               
                counter[value]++;
            }
            
            if(flag==1){
                break;
            }
        }
        for (int i = 0; i < 26; i++) {
            System.out.printf("%c : %d\n", i + 'a', counter[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[] counter = new int[27];
        int flag=0;
        while (sc.hasNext()) {
            String in = sc.nextLine();
           
            in=in.toLowerCase();
            for (int i = 0; i < in.length(); i++) {
          
                int value = in.charAt(i)-'a' ;
                if(value<0 || value>26){
                    continue;
                }
                if(value==-51){
                    flag=1;
                    break;
                }
           
               
                counter[value]++;
            }
            
            if(flag==1){
                break;
            }
        }
        for (int i = 0; i < 26; i++) {
            System.out.printf("%c : %d\n", i + 'a', counter[i]);
        }
        sc.close();
    }
} Main public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int[] counter = new int[27];
        int flag=0;
        while (sc.hasNext()) {
            String in = sc.nextLine();
           
            in=in.toLowerCase();
            for (int i = 0; i < in.length(); i++) {
          
                int value = in.charAt(i)-'a' ;
                if(value<0 || value>26){
                    continue;
                }
                if(value==-51){
                    flag=1;
                    break;
                }
           
               
                counter[value]++;
            }
            
            if(flag==1){
                break;
            }
        }
        for (int i = 0; i < 26; i++) {
            System.out.printf("%c : %d\n", i + 'a', counter[i]);
        }
        sc.close();
    } main {
        Scanner sc = new Scanner(System.in);
        int[] counter = new int[27];
        int flag=0;
        while (sc.hasNext()) {
            String in = sc.nextLine();
           
            in=in.toLowerCase();
            for (int i = 0; i < in.length(); i++) {
          
                int value = in.charAt(i)-'a' ;
                if(value<0 || value>26){
                    continue;
                }
                if(value==-51){
                    flag=1;
                    break;
                }
           
               
                counter[value]++;
            }
            
            if(flag==1){
                break;
            }
        }
        for (int i = 0; i < 26; i++) {
            System.out.printf("%c : %d\n", i + 'a', counter[i]);
        }
        sc.close();
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int[] counter = new int[27]; counter new int[27] 27 int flag=0; flag 0 while (sc.hasNext()) {
            String in = sc.nextLine();
           
            in=in.toLowerCase();
            for (int i = 0; i < in.length(); i++) {
          
                int value = in.charAt(i)-'a' ;
                if(value<0 || value>26){
                    continue;
                }
                if(value==-51){
                    flag=1;
                    break;
                }
           
               
                counter[value]++;
            }
            
            if(flag==1){
                break;
            }
        } sc.hasNext() sc.hasNext sc {
            String in = sc.nextLine();
           
            in=in.toLowerCase();
            for (int i = 0; i < in.length(); i++) {
          
                int value = in.charAt(i)-'a' ;
                if(value<0 || value>26){
                    continue;
                }
                if(value==-51){
                    flag=1;
                    break;
                }
           
               
                counter[value]++;
            }
            
            if(flag==1){
                break;
            }
        } String in = sc.nextLine(); in sc.nextLine() sc.nextLine sc in=in.toLowerCase() in in.toLowerCase() in.toLowerCase in for (int i = 0; i < in.length(); i++) {
          
                int value = in.charAt(i)-'a' ;
                if(value<0 || value>26){
                    continue;
                }
                if(value==-51){
                    flag=1;
                    break;
                }
           
               
                counter[value]++;
            } int i = 0; int i = 0; i 0 i < in.length() i in.length() in.length in i++ i++ i {
          
                int value = in.charAt(i)-'a' ;
                if(value<0 || value>26){
                    continue;
                }
                if(value==-51){
                    flag=1;
                    break;
                }
           
               
                counter[value]++;
            } {
          
                int value = in.charAt(i)-'a' ;
                if(value<0 || value>26){
                    continue;
                }
                if(value==-51){
                    flag=1;
                    break;
                }
           
               
                counter[value]++;
            } int value = in.charAt(i)-'a' ; value in.charAt(i)-'a' in.charAt(i) in.charAt in i 'a' if(value<0 || value>26){
                    continue;
                } value<0 || value>26 value<0 value 0 value>26 value 26 {
                    continue;
                } continue; if(value==-51){
                    flag=1;
                    break;
                } value==-51 value -51 51 {
                    flag=1;
                    break;
                } flag=1 flag 1 break; counter[value]++ counter[value] counter value if(flag==1){
                break;
            } flag==1 flag 1 {
                break;
            } break; for (int i = 0; i < 26; i++) {
            System.out.printf("%c : %d\n", i + 'a', counter[i]);
        } int i = 0; int i = 0; i 0 i < 26 i 26 i++ i++ i {
            System.out.printf("%c : %d\n", i + 'a', counter[i]);
        } {
            System.out.printf("%c : %d\n", i + 'a', counter[i]);
        } System.out.printf("%c : %d\n", i + 'a', counter[i]) System.out.printf System.out System System.out "%c : %d\n" i + 'a' i 'a' counter[i] counter 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[] counter = new int[27];
        int flag=0;
        while (sc.hasNext()) {
            String in = sc.nextLine();
           
            in=in.toLowerCase();
            for (int i = 0; i < in.length(); i++) {
          
                int value = in.charAt(i)-'a' ;
                if(value<0 || value>26){
                    continue;
                }
                if(value==-51){
                    flag=1;
                    break;
                }
           
               
                counter[value]++;
            }
            
            if(flag==1){
                break;
            }
        }
        for (int i = 0; i < 26; i++) {
            System.out.printf("%c : %d\n", i + 'a', counter[i]);
        }
        sc.close();
    }
} public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int[] counter = new int[27];
        int flag=0;
        while (sc.hasNext()) {
            String in = sc.nextLine();
           
            in=in.toLowerCase();
            for (int i = 0; i < in.length(); i++) {
          
                int value = in.charAt(i)-'a' ;
                if(value<0 || value>26){
                    continue;
                }
                if(value==-51){
                    flag=1;
                    break;
                }
           
               
                counter[value]++;
            }
            
            if(flag==1){
                break;
            }
        }
        for (int i = 0; i < 26; i++) {
            System.out.printf("%c : %d\n", i + 'a', counter[i]);
        }
        sc.close();
    }
} Main
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int[] counter = new int[27];
        int flag=0;
        while (sc.hasNext()) {
            String in = sc.nextLine();
           
            in=in.toLowerCase();
            for (int i = 0; i < in.length(); i++) {
          
                int value = in.charAt(i)-'a' ;
                if(value<0 || value>26){
                    continue;
                }
                if(value==-51){
                    flag=1;
                    break;
                }
           
               
                counter[value]++;
            }
            
            if(flag==1){
                break;
            }
        }
        for (int i = 0; i < 26; i++) {
            System.out.printf("%c : %d\n", i + 'a', counter[i]);
        }
        sc.close();
    }
}
