/* ITP1_8_C */
import java.io.*;

class Main
{
  static final int ALPHABET = 26;

  public static void main(String[] args)
  {
    int[] count = new int[ALPHABET];
    try{
      BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
      StringBuilder sb = new StringBuilder();
      String str = "";

      while((str = br.readLine()) != null){
        str = str.toLowerCase();

        for(char c : str.toCharArray()){
          if(Character.isLetter(c))
            count[c - 'a']++;
        }
      }

      for(int i = 0; i < count.length; i++){
        sb.append((char)('a' + i));
        sb.append(" : ").append(count[i]).append("\n");
      }
      System.out.print(sb);

    }catch(Exception e){
      System.out.println(e);
    }
  }
} import java.io.*; io.* java class Main
{
  static final int ALPHABET = 26;

  public static void main(String[] args)
  {
    int[] count = new int[ALPHABET];
    try{
      BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
      StringBuilder sb = new StringBuilder();
      String str = "";

      while((str = br.readLine()) != null){
        str = str.toLowerCase();

        for(char c : str.toCharArray()){
          if(Character.isLetter(c))
            count[c - 'a']++;
        }
      }

      for(int i = 0; i < count.length; i++){
        sb.append((char)('a' + i));
        sb.append(" : ").append(count[i]).append("\n");
      }
      System.out.print(sb);

    }catch(Exception e){
      System.out.println(e);
    }
  }
} Main static final int ALPHABET = 26; ALPHABET 26 public static void main(String[] args)
  {
    int[] count = new int[ALPHABET];
    try{
      BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
      StringBuilder sb = new StringBuilder();
      String str = "";

      while((str = br.readLine()) != null){
        str = str.toLowerCase();

        for(char c : str.toCharArray()){
          if(Character.isLetter(c))
            count[c - 'a']++;
        }
      }

      for(int i = 0; i < count.length; i++){
        sb.append((char)('a' + i));
        sb.append(" : ").append(count[i]).append("\n");
      }
      System.out.print(sb);

    }catch(Exception e){
      System.out.println(e);
    }
  } main {
    int[] count = new int[ALPHABET];
    try{
      BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
      StringBuilder sb = new StringBuilder();
      String str = "";

      while((str = br.readLine()) != null){
        str = str.toLowerCase();

        for(char c : str.toCharArray()){
          if(Character.isLetter(c))
            count[c - 'a']++;
        }
      }

      for(int i = 0; i < count.length; i++){
        sb.append((char)('a' + i));
        sb.append(" : ").append(count[i]).append("\n");
      }
      System.out.print(sb);

    }catch(Exception e){
      System.out.println(e);
    }
  } int[] count = new int[ALPHABET]; count new int[ALPHABET] ALPHABET try{
      BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
      StringBuilder sb = new StringBuilder();
      String str = "";

      while((str = br.readLine()) != null){
        str = str.toLowerCase();

        for(char c : str.toCharArray()){
          if(Character.isLetter(c))
            count[c - 'a']++;
        }
      }

      for(int i = 0; i < count.length; i++){
        sb.append((char)('a' + i));
        sb.append(" : ").append(count[i]).append("\n");
      }
      System.out.print(sb);

    }catch(Exception e){
      System.out.println(e);
    } catch(Exception e){
      System.out.println(e);
    } Exception e {
      System.out.println(e);
    } System.out.println(e) System.out.println System.out System System.out e {
      BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
      StringBuilder sb = new StringBuilder();
      String str = "";

      while((str = br.readLine()) != null){
        str = str.toLowerCase();

        for(char c : str.toCharArray()){
          if(Character.isLetter(c))
            count[c - 'a']++;
        }
      }

      for(int i = 0; i < count.length; i++){
        sb.append((char)('a' + i));
        sb.append(" : ").append(count[i]).append("\n");
      }
      System.out.print(sb);

    } BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); br new BufferedReader(new InputStreamReader(System.in)) StringBuilder sb = new StringBuilder(); sb new StringBuilder() String str = ""; str "" while((str = br.readLine()) != null){
        str = str.toLowerCase();

        for(char c : str.toCharArray()){
          if(Character.isLetter(c))
            count[c - 'a']++;
        }
      } (str = br.readLine()) != null (str = br.readLine()) str br.readLine() br.readLine br null {
        str = str.toLowerCase();

        for(char c : str.toCharArray()){
          if(Character.isLetter(c))
            count[c - 'a']++;
        }
      } str = str.toLowerCase() str str.toLowerCase() str.toLowerCase str for(char c : str.toCharArray()){
          if(Character.isLetter(c))
            count[c - 'a']++;
        } char c str.toCharArray() str.toCharArray str {
          if(Character.isLetter(c))
            count[c - 'a']++;
        } {
          if(Character.isLetter(c))
            count[c - 'a']++;
        } if(Character.isLetter(c))
            count[c - 'a']++; Character.isLetter(c) Character.isLetter Character c count[c - 'a']++ count[c - 'a'] count c - 'a' c 'a' for(int i = 0; i < count.length; i++){
        sb.append((char)('a' + i));
        sb.append(" : ").append(count[i]).append("\n");
      } int i = 0; int i = 0; i 0 i < count.length i count.length count count.length i++ i++ i {
        sb.append((char)('a' + i));
        sb.append(" : ").append(count[i]).append("\n");
      } {
        sb.append((char)('a' + i));
        sb.append(" : ").append(count[i]).append("\n");
      } sb.append((char)('a' + i)) sb.append sb (char)('a' + i) 'a' i sb.append(" : ").append(count[i]).append("\n") sb.append(" : ").append(count[i]).append sb.append(" : ").append(count[i]) sb.append(" : ").append sb.append(" : ") sb.append sb " : " count[i] count i "\n" System.out.print(sb) System.out.print System.out System System.out sb String[] args args
/* ITP1_8_C */
import java.io.*;

class Main
{
  static final int ALPHABET = 26;

  public static void main(String[] args)
  {
    int[] count = new int[ALPHABET];
    try{
      BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
      StringBuilder sb = new StringBuilder();
      String str = "";

      while((str = br.readLine()) != null){
        str = str.toLowerCase();

        for(char c : str.toCharArray()){
          if(Character.isLetter(c))
            count[c - 'a']++;
        }
      }

      for(int i = 0; i < count.length; i++){
        sb.append((char)('a' + i));
        sb.append(" : ").append(count[i]).append("\n");
      }
      System.out.print(sb);

    }catch(Exception e){
      System.out.println(e);
    }
  }
}