import java.io.*;
import java.util.Scanner;
public class Main{
	public static void main(String args[]){
    int i=0;
    int[] answer = new int[26];
    
    Scanner scan = new Scanner(System.in);
    while(scan.hasNext()){
    try{
      String line = scan.nextLine();
      for(i = 0;i < 1200;i++){
        int n = line.charAt(i);
        if(n >= 97 && n <= 122){
          answer[n - 97] += 1;
        }else if (n >= 65 && n <= 90){
          answer[n - 65] += 1;
        }else{

        }
      }
      
		}catch(Exception e){
    }
  }
  for(i = 0;i<26;i++){
    char c= (char) ('a' + i);
    System.out.println(c + " : "+answer[i]);
  }
  

  }
} import java.io.*; io.* java import java.util.Scanner; Scanner java.util public class Main{
	public static void main(String args[]){
    int i=0;
    int[] answer = new int[26];
    
    Scanner scan = new Scanner(System.in);
    while(scan.hasNext()){
    try{
      String line = scan.nextLine();
      for(i = 0;i < 1200;i++){
        int n = line.charAt(i);
        if(n >= 97 && n <= 122){
          answer[n - 97] += 1;
        }else if (n >= 65 && n <= 90){
          answer[n - 65] += 1;
        }else{

        }
      }
      
		}catch(Exception e){
    }
  }
  for(i = 0;i<26;i++){
    char c= (char) ('a' + i);
    System.out.println(c + " : "+answer[i]);
  }
  

  }
} Main public static void main(String args[]){
    int i=0;
    int[] answer = new int[26];
    
    Scanner scan = new Scanner(System.in);
    while(scan.hasNext()){
    try{
      String line = scan.nextLine();
      for(i = 0;i < 1200;i++){
        int n = line.charAt(i);
        if(n >= 97 && n <= 122){
          answer[n - 97] += 1;
        }else if (n >= 65 && n <= 90){
          answer[n - 65] += 1;
        }else{

        }
      }
      
		}catch(Exception e){
    }
  }
  for(i = 0;i<26;i++){
    char c= (char) ('a' + i);
    System.out.println(c + " : "+answer[i]);
  }
  

  } main {
    int i=0;
    int[] answer = new int[26];
    
    Scanner scan = new Scanner(System.in);
    while(scan.hasNext()){
    try{
      String line = scan.nextLine();
      for(i = 0;i < 1200;i++){
        int n = line.charAt(i);
        if(n >= 97 && n <= 122){
          answer[n - 97] += 1;
        }else if (n >= 65 && n <= 90){
          answer[n - 65] += 1;
        }else{

        }
      }
      
		}catch(Exception e){
    }
  }
  for(i = 0;i<26;i++){
    char c= (char) ('a' + i);
    System.out.println(c + " : "+answer[i]);
  }
  

  } int i=0; i 0 int[] answer = new int[26]; answer new int[26] 26 Scanner scan = new Scanner(System.in); scan new Scanner(System.in) while(scan.hasNext()){
    try{
      String line = scan.nextLine();
      for(i = 0;i < 1200;i++){
        int n = line.charAt(i);
        if(n >= 97 && n <= 122){
          answer[n - 97] += 1;
        }else if (n >= 65 && n <= 90){
          answer[n - 65] += 1;
        }else{

        }
      }
      
		}catch(Exception e){
    }
  } scan.hasNext() scan.hasNext scan {
    try{
      String line = scan.nextLine();
      for(i = 0;i < 1200;i++){
        int n = line.charAt(i);
        if(n >= 97 && n <= 122){
          answer[n - 97] += 1;
        }else if (n >= 65 && n <= 90){
          answer[n - 65] += 1;
        }else{

        }
      }
      
		}catch(Exception e){
    }
  } try{
      String line = scan.nextLine();
      for(i = 0;i < 1200;i++){
        int n = line.charAt(i);
        if(n >= 97 && n <= 122){
          answer[n - 97] += 1;
        }else if (n >= 65 && n <= 90){
          answer[n - 65] += 1;
        }else{

        }
      }
      
		}catch(Exception e){
    } catch(Exception e){
    } Exception e {
    } {
      String line = scan.nextLine();
      for(i = 0;i < 1200;i++){
        int n = line.charAt(i);
        if(n >= 97 && n <= 122){
          answer[n - 97] += 1;
        }else if (n >= 65 && n <= 90){
          answer[n - 65] += 1;
        }else{

        }
      }
      
		} String line = scan.nextLine(); line scan.nextLine() scan.nextLine scan for(i = 0;i < 1200;i++){
        int n = line.charAt(i);
        if(n >= 97 && n <= 122){
          answer[n - 97] += 1;
        }else if (n >= 65 && n <= 90){
          answer[n - 65] += 1;
        }else{

        }
      } i = 0; i = 0 i 0 i < 1200 i 1200 i++ i++ i {
        int n = line.charAt(i);
        if(n >= 97 && n <= 122){
          answer[n - 97] += 1;
        }else if (n >= 65 && n <= 90){
          answer[n - 65] += 1;
        }else{

        }
      } {
        int n = line.charAt(i);
        if(n >= 97 && n <= 122){
          answer[n - 97] += 1;
        }else if (n >= 65 && n <= 90){
          answer[n - 65] += 1;
        }else{

        }
      } int n = line.charAt(i); n line.charAt(i) line.charAt line i if(n >= 97 && n <= 122){
          answer[n - 97] += 1;
        }else if (n >= 65 && n <= 90){
          answer[n - 65] += 1;
        }else{

        } n >= 97 && n <= 122 n >= 97 n 97 n <= 122 n 122 {
          answer[n - 97] += 1;
        } answer[n - 97] += 1 answer[n - 97] answer n - 97 n 97 1 if (n >= 65 && n <= 90){
          answer[n - 65] += 1;
        }else{

        } n >= 65 && n <= 90 n >= 65 n 65 n <= 90 n 90 {
          answer[n - 65] += 1;
        } answer[n - 65] += 1 answer[n - 65] answer n - 65 n 65 1 {

        } for(i = 0;i<26;i++){
    char c= (char) ('a' + i);
    System.out.println(c + " : "+answer[i]);
  } i = 0; i = 0 i 0 i<26 i 26 i++ i++ i {
    char c= (char) ('a' + i);
    System.out.println(c + " : "+answer[i]);
  } {
    char c= (char) ('a' + i);
    System.out.println(c + " : "+answer[i]);
  } char c= (char) ('a' + i); c (char) ('a' + i) 'a' i System.out.println(c + " : "+answer[i]) System.out.println System.out System System.out c + " : "+answer[i] c + " : "+answer[i] c " : " answer[i] answer i String args[] args public class Main{
	public static void main(String args[]){
    int i=0;
    int[] answer = new int[26];
    
    Scanner scan = new Scanner(System.in);
    while(scan.hasNext()){
    try{
      String line = scan.nextLine();
      for(i = 0;i < 1200;i++){
        int n = line.charAt(i);
        if(n >= 97 && n <= 122){
          answer[n - 97] += 1;
        }else if (n >= 65 && n <= 90){
          answer[n - 65] += 1;
        }else{

        }
      }
      
		}catch(Exception e){
    }
  }
  for(i = 0;i<26;i++){
    char c= (char) ('a' + i);
    System.out.println(c + " : "+answer[i]);
  }
  

  }
} public class Main{
	public static void main(String args[]){
    int i=0;
    int[] answer = new int[26];
    
    Scanner scan = new Scanner(System.in);
    while(scan.hasNext()){
    try{
      String line = scan.nextLine();
      for(i = 0;i < 1200;i++){
        int n = line.charAt(i);
        if(n >= 97 && n <= 122){
          answer[n - 97] += 1;
        }else if (n >= 65 && n <= 90){
          answer[n - 65] += 1;
        }else{

        }
      }
      
		}catch(Exception e){
    }
  }
  for(i = 0;i<26;i++){
    char c= (char) ('a' + i);
    System.out.println(c + " : "+answer[i]);
  }
  

  }
} Main
import java.io.*;
import java.util.Scanner;
public class Main{
	public static void main(String args[]){
    int i=0;
    int[] answer = new int[26];
    
    Scanner scan = new Scanner(System.in);
    while(scan.hasNext()){
    try{
      String line = scan.nextLine();
      for(i = 0;i < 1200;i++){
        int n = line.charAt(i);
        if(n >= 97 && n <= 122){
          answer[n - 97] += 1;
        }else if (n >= 65 && n <= 90){
          answer[n - 65] += 1;
        }else{

        }
      }
      
		}catch(Exception e){
    }
  }
  for(i = 0;i<26;i++){
    char c= (char) ('a' + i);
    System.out.println(c + " : "+answer[i]);
  }
  

  }
}
