import java.io.*;

public class Main {
  public static void main(String[] args) {
    BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
    try {
      int[] alphabet = new int[26];
      String str;
      while((str = reader.readLine()) != null) {
        str = str.toLowerCase();
        byte[] asciiStr = str.getBytes("US-ASCII");
        for (int i = 0; i < asciiStr.length; i++) {
          if (asciiStr[i] >= 97 && asciiStr[i] <= 122) {
            alphabet[asciiStr[i] - 97]++;
          }
        }
      }
      for (int i = 0; i < 26; i++) {
        System.out.printf("%c : %d\n", i + 97, alphabet[i]);
      }
    }
    catch (IOException e) {
      System.out.println(e);
    }
  }
} import java.io.*; io.* java public class Main {
  public static void main(String[] args) {
    BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
    try {
      int[] alphabet = new int[26];
      String str;
      while((str = reader.readLine()) != null) {
        str = str.toLowerCase();
        byte[] asciiStr = str.getBytes("US-ASCII");
        for (int i = 0; i < asciiStr.length; i++) {
          if (asciiStr[i] >= 97 && asciiStr[i] <= 122) {
            alphabet[asciiStr[i] - 97]++;
          }
        }
      }
      for (int i = 0; i < 26; i++) {
        System.out.printf("%c : %d\n", i + 97, alphabet[i]);
      }
    }
    catch (IOException e) {
      System.out.println(e);
    }
  }
} Main public static void main(String[] args) {
    BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
    try {
      int[] alphabet = new int[26];
      String str;
      while((str = reader.readLine()) != null) {
        str = str.toLowerCase();
        byte[] asciiStr = str.getBytes("US-ASCII");
        for (int i = 0; i < asciiStr.length; i++) {
          if (asciiStr[i] >= 97 && asciiStr[i] <= 122) {
            alphabet[asciiStr[i] - 97]++;
          }
        }
      }
      for (int i = 0; i < 26; i++) {
        System.out.printf("%c : %d\n", i + 97, alphabet[i]);
      }
    }
    catch (IOException e) {
      System.out.println(e);
    }
  } main {
    BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
    try {
      int[] alphabet = new int[26];
      String str;
      while((str = reader.readLine()) != null) {
        str = str.toLowerCase();
        byte[] asciiStr = str.getBytes("US-ASCII");
        for (int i = 0; i < asciiStr.length; i++) {
          if (asciiStr[i] >= 97 && asciiStr[i] <= 122) {
            alphabet[asciiStr[i] - 97]++;
          }
        }
      }
      for (int i = 0; i < 26; i++) {
        System.out.printf("%c : %d\n", i + 97, alphabet[i]);
      }
    }
    catch (IOException e) {
      System.out.println(e);
    }
  } BufferedReader reader = new BufferedReader(new InputStreamReader(System.in)); reader new BufferedReader(new InputStreamReader(System.in)) try {
      int[] alphabet = new int[26];
      String str;
      while((str = reader.readLine()) != null) {
        str = str.toLowerCase();
        byte[] asciiStr = str.getBytes("US-ASCII");
        for (int i = 0; i < asciiStr.length; i++) {
          if (asciiStr[i] >= 97 && asciiStr[i] <= 122) {
            alphabet[asciiStr[i] - 97]++;
          }
        }
      }
      for (int i = 0; i < 26; i++) {
        System.out.printf("%c : %d\n", i + 97, alphabet[i]);
      }
    }
    catch (IOException e) {
      System.out.println(e);
    } catch (IOException e) {
      System.out.println(e);
    } IOException e {
      System.out.println(e);
    } System.out.println(e) System.out.println System.out System System.out e {
      int[] alphabet = new int[26];
      String str;
      while((str = reader.readLine()) != null) {
        str = str.toLowerCase();
        byte[] asciiStr = str.getBytes("US-ASCII");
        for (int i = 0; i < asciiStr.length; i++) {
          if (asciiStr[i] >= 97 && asciiStr[i] <= 122) {
            alphabet[asciiStr[i] - 97]++;
          }
        }
      }
      for (int i = 0; i < 26; i++) {
        System.out.printf("%c : %d\n", i + 97, alphabet[i]);
      }
    } int[] alphabet = new int[26]; alphabet new int[26] 26 String str; str while((str = reader.readLine()) != null) {
        str = str.toLowerCase();
        byte[] asciiStr = str.getBytes("US-ASCII");
        for (int i = 0; i < asciiStr.length; i++) {
          if (asciiStr[i] >= 97 && asciiStr[i] <= 122) {
            alphabet[asciiStr[i] - 97]++;
          }
        }
      } (str = reader.readLine()) != null (str = reader.readLine()) str reader.readLine() reader.readLine reader null {
        str = str.toLowerCase();
        byte[] asciiStr = str.getBytes("US-ASCII");
        for (int i = 0; i < asciiStr.length; i++) {
          if (asciiStr[i] >= 97 && asciiStr[i] <= 122) {
            alphabet[asciiStr[i] - 97]++;
          }
        }
      } str = str.toLowerCase() str str.toLowerCase() str.toLowerCase str byte[] asciiStr = str.getBytes("US-ASCII"); asciiStr str.getBytes("US-ASCII") str.getBytes str "US-ASCII" for (int i = 0; i < asciiStr.length; i++) {
          if (asciiStr[i] >= 97 && asciiStr[i] <= 122) {
            alphabet[asciiStr[i] - 97]++;
          }
        } int i = 0; int i = 0; i 0 i < asciiStr.length i asciiStr.length asciiStr asciiStr.length i++ i++ i {
          if (asciiStr[i] >= 97 && asciiStr[i] <= 122) {
            alphabet[asciiStr[i] - 97]++;
          }
        } {
          if (asciiStr[i] >= 97 && asciiStr[i] <= 122) {
            alphabet[asciiStr[i] - 97]++;
          }
        } if (asciiStr[i] >= 97 && asciiStr[i] <= 122) {
            alphabet[asciiStr[i] - 97]++;
          } asciiStr[i] >= 97 && asciiStr[i] <= 122 asciiStr[i] >= 97 asciiStr[i] asciiStr i 97 asciiStr[i] <= 122 asciiStr[i] asciiStr i 122 {
            alphabet[asciiStr[i] - 97]++;
          } alphabet[asciiStr[i] - 97]++ alphabet[asciiStr[i] - 97] alphabet asciiStr[i] - 97 asciiStr[i] asciiStr i 97 for (int i = 0; i < 26; i++) {
        System.out.printf("%c : %d\n", i + 97, alphabet[i]);
      } int i = 0; int i = 0; i 0 i < 26 i 26 i++ i++ i {
        System.out.printf("%c : %d\n", i + 97, alphabet[i]);
      } {
        System.out.printf("%c : %d\n", i + 97, alphabet[i]);
      } System.out.printf("%c : %d\n", i + 97, alphabet[i]) System.out.printf System.out System System.out "%c : %d\n" i + 97 i 97 alphabet[i] alphabet i String[] args args public class Main {
  public static void main(String[] args) {
    BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
    try {
      int[] alphabet = new int[26];
      String str;
      while((str = reader.readLine()) != null) {
        str = str.toLowerCase();
        byte[] asciiStr = str.getBytes("US-ASCII");
        for (int i = 0; i < asciiStr.length; i++) {
          if (asciiStr[i] >= 97 && asciiStr[i] <= 122) {
            alphabet[asciiStr[i] - 97]++;
          }
        }
      }
      for (int i = 0; i < 26; i++) {
        System.out.printf("%c : %d\n", i + 97, alphabet[i]);
      }
    }
    catch (IOException e) {
      System.out.println(e);
    }
  }
} public class Main {
  public static void main(String[] args) {
    BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
    try {
      int[] alphabet = new int[26];
      String str;
      while((str = reader.readLine()) != null) {
        str = str.toLowerCase();
        byte[] asciiStr = str.getBytes("US-ASCII");
        for (int i = 0; i < asciiStr.length; i++) {
          if (asciiStr[i] >= 97 && asciiStr[i] <= 122) {
            alphabet[asciiStr[i] - 97]++;
          }
        }
      }
      for (int i = 0; i < 26; i++) {
        System.out.printf("%c : %d\n", i + 97, alphabet[i]);
      }
    }
    catch (IOException e) {
      System.out.println(e);
    }
  }
} Main
import java.io.*;

public class Main {
  public static void main(String[] args) {
    BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
    try {
      int[] alphabet = new int[26];
      String str;
      while((str = reader.readLine()) != null) {
        str = str.toLowerCase();
        byte[] asciiStr = str.getBytes("US-ASCII");
        for (int i = 0; i < asciiStr.length; i++) {
          if (asciiStr[i] >= 97 && asciiStr[i] <= 122) {
            alphabet[asciiStr[i] - 97]++;
          }
        }
      }
      for (int i = 0; i < 26; i++) {
        System.out.printf("%c : %d\n", i + 97, alphabet[i]);
      }
    }
    catch (IOException e) {
      System.out.println(e);
    }
  }
}