import java.util.Scanner;

public class Main {

  public static void main(String[] args) {
    Scanner stdin = new Scanner(System.in);
    int[] chars = new int[26];
    while (stdin.hasNext()) {
      String str = stdin.next();
      int len = str.length();
      for (int i = 0; i < len; i++) {
        int j = Character.toLowerCase(str.charAt(i)) - 97;
        if (j >= 0 && j < 26) {
          chars[j]++;
        }
      }
    }

    for (int i = 0; i < 26; i++) {
      System.out.printf("%s : %d%n", (char) (i + 97), chars[i]);
    }
  }

} import java.util.Scanner; Scanner java.util public class Main {

  public static void main(String[] args) {
    Scanner stdin = new Scanner(System.in);
    int[] chars = new int[26];
    while (stdin.hasNext()) {
      String str = stdin.next();
      int len = str.length();
      for (int i = 0; i < len; i++) {
        int j = Character.toLowerCase(str.charAt(i)) - 97;
        if (j >= 0 && j < 26) {
          chars[j]++;
        }
      }
    }

    for (int i = 0; i < 26; i++) {
      System.out.printf("%s : %d%n", (char) (i + 97), chars[i]);
    }
  }

} Main public static void main(String[] args) {
    Scanner stdin = new Scanner(System.in);
    int[] chars = new int[26];
    while (stdin.hasNext()) {
      String str = stdin.next();
      int len = str.length();
      for (int i = 0; i < len; i++) {
        int j = Character.toLowerCase(str.charAt(i)) - 97;
        if (j >= 0 && j < 26) {
          chars[j]++;
        }
      }
    }

    for (int i = 0; i < 26; i++) {
      System.out.printf("%s : %d%n", (char) (i + 97), chars[i]);
    }
  } main {
    Scanner stdin = new Scanner(System.in);
    int[] chars = new int[26];
    while (stdin.hasNext()) {
      String str = stdin.next();
      int len = str.length();
      for (int i = 0; i < len; i++) {
        int j = Character.toLowerCase(str.charAt(i)) - 97;
        if (j >= 0 && j < 26) {
          chars[j]++;
        }
      }
    }

    for (int i = 0; i < 26; i++) {
      System.out.printf("%s : %d%n", (char) (i + 97), chars[i]);
    }
  } Scanner stdin = new Scanner(System.in); stdin new Scanner(System.in) int[] chars = new int[26]; chars new int[26] 26 while (stdin.hasNext()) {
      String str = stdin.next();
      int len = str.length();
      for (int i = 0; i < len; i++) {
        int j = Character.toLowerCase(str.charAt(i)) - 97;
        if (j >= 0 && j < 26) {
          chars[j]++;
        }
      }
    } stdin.hasNext() stdin.hasNext stdin {
      String str = stdin.next();
      int len = str.length();
      for (int i = 0; i < len; i++) {
        int j = Character.toLowerCase(str.charAt(i)) - 97;
        if (j >= 0 && j < 26) {
          chars[j]++;
        }
      }
    } String str = stdin.next(); str stdin.next() stdin.next stdin int len = str.length(); len str.length() str.length str for (int i = 0; i < len; i++) {
        int j = Character.toLowerCase(str.charAt(i)) - 97;
        if (j >= 0 && j < 26) {
          chars[j]++;
        }
      } int i = 0; int i = 0; i 0 i < len i len i++ i++ i {
        int j = Character.toLowerCase(str.charAt(i)) - 97;
        if (j >= 0 && j < 26) {
          chars[j]++;
        }
      } {
        int j = Character.toLowerCase(str.charAt(i)) - 97;
        if (j >= 0 && j < 26) {
          chars[j]++;
        }
      } int j = Character.toLowerCase(str.charAt(i)) - 97; j Character.toLowerCase(str.charAt(i)) - 97 Character.toLowerCase(str.charAt(i)) Character.toLowerCase Character str.charAt(i) str.charAt str i 97 if (j >= 0 && j < 26) {
          chars[j]++;
        } j >= 0 && j < 26 j >= 0 j 0 j < 26 j 26 {
          chars[j]++;
        } chars[j]++ chars[j] chars j for (int i = 0; i < 26; i++) {
      System.out.printf("%s : %d%n", (char) (i + 97), chars[i]);
    } int i = 0; int i = 0; i 0 i < 26 i 26 i++ i++ i {
      System.out.printf("%s : %d%n", (char) (i + 97), chars[i]);
    } {
      System.out.printf("%s : %d%n", (char) (i + 97), chars[i]);
    } System.out.printf("%s : %d%n", (char) (i + 97), chars[i]) System.out.printf System.out System System.out "%s : %d%n" (char) (i + 97) i 97 chars[i] chars i String[] args args public class Main {

  public static void main(String[] args) {
    Scanner stdin = new Scanner(System.in);
    int[] chars = new int[26];
    while (stdin.hasNext()) {
      String str = stdin.next();
      int len = str.length();
      for (int i = 0; i < len; i++) {
        int j = Character.toLowerCase(str.charAt(i)) - 97;
        if (j >= 0 && j < 26) {
          chars[j]++;
        }
      }
    }

    for (int i = 0; i < 26; i++) {
      System.out.printf("%s : %d%n", (char) (i + 97), chars[i]);
    }
  }

} public class Main {

  public static void main(String[] args) {
    Scanner stdin = new Scanner(System.in);
    int[] chars = new int[26];
    while (stdin.hasNext()) {
      String str = stdin.next();
      int len = str.length();
      for (int i = 0; i < len; i++) {
        int j = Character.toLowerCase(str.charAt(i)) - 97;
        if (j >= 0 && j < 26) {
          chars[j]++;
        }
      }
    }

    for (int i = 0; i < 26; i++) {
      System.out.printf("%s : %d%n", (char) (i + 97), chars[i]);
    }
  }

} Main
import java.util.Scanner;

public class Main {

  public static void main(String[] args) {
    Scanner stdin = new Scanner(System.in);
    int[] chars = new int[26];
    while (stdin.hasNext()) {
      String str = stdin.next();
      int len = str.length();
      for (int i = 0; i < len; i++) {
        int j = Character.toLowerCase(str.charAt(i)) - 97;
        if (j >= 0 && j < 26) {
          chars[j]++;
        }
      }
    }

    for (int i = 0; i < 26; i++) {
      System.out.printf("%s : %d%n", (char) (i + 97), chars[i]);
    }
  }

}