import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Main {

  public static void main(String[] args) throws IOException {
    
    try(BufferedReader br = new BufferedReader(new InputStreamReader(System.in))) {

      String line;
      StringBuilder lowered = new StringBuilder();
      char c;
      char ca = "a".charAt(0);
      char cz = "z".charAt(0);
      int[] count = new int[26];

      while(true) {
        line = br.readLine();
        if ( line  == null || line.isEmpty() ) break;

        lowered.append(line.toLowerCase());
        for ( int i = 0; i < lowered.length(); i++ ) {
          c = lowered.charAt(i);
          if( ca > c || c > cz) continue;
          count[(c-ca)] += 1;
        }
        lowered.setLength(0);

      }

      for ( int i = 0; i < count.length; i++ ) {
        System.out.println(Character.valueOf((char)(ca + (char)i)).toString() + " : " + count[i]);
      }
    }
  }
} import java.io.BufferedReader; BufferedReader java.io import java.io.IOException; IOException java.io import java.io.InputStreamReader; InputStreamReader java.io public class Main {

  public static void main(String[] args) throws IOException {
    
    try(BufferedReader br = new BufferedReader(new InputStreamReader(System.in))) {

      String line;
      StringBuilder lowered = new StringBuilder();
      char c;
      char ca = "a".charAt(0);
      char cz = "z".charAt(0);
      int[] count = new int[26];

      while(true) {
        line = br.readLine();
        if ( line  == null || line.isEmpty() ) break;

        lowered.append(line.toLowerCase());
        for ( int i = 0; i < lowered.length(); i++ ) {
          c = lowered.charAt(i);
          if( ca > c || c > cz) continue;
          count[(c-ca)] += 1;
        }
        lowered.setLength(0);

      }

      for ( int i = 0; i < count.length; i++ ) {
        System.out.println(Character.valueOf((char)(ca + (char)i)).toString() + " : " + count[i]);
      }
    }
  }
} Main public static void main(String[] args) throws IOException {
    
    try(BufferedReader br = new BufferedReader(new InputStreamReader(System.in))) {

      String line;
      StringBuilder lowered = new StringBuilder();
      char c;
      char ca = "a".charAt(0);
      char cz = "z".charAt(0);
      int[] count = new int[26];

      while(true) {
        line = br.readLine();
        if ( line  == null || line.isEmpty() ) break;

        lowered.append(line.toLowerCase());
        for ( int i = 0; i < lowered.length(); i++ ) {
          c = lowered.charAt(i);
          if( ca > c || c > cz) continue;
          count[(c-ca)] += 1;
        }
        lowered.setLength(0);

      }

      for ( int i = 0; i < count.length; i++ ) {
        System.out.println(Character.valueOf((char)(ca + (char)i)).toString() + " : " + count[i]);
      }
    }
  } main {
    
    try(BufferedReader br = new BufferedReader(new InputStreamReader(System.in))) {

      String line;
      StringBuilder lowered = new StringBuilder();
      char c;
      char ca = "a".charAt(0);
      char cz = "z".charAt(0);
      int[] count = new int[26];

      while(true) {
        line = br.readLine();
        if ( line  == null || line.isEmpty() ) break;

        lowered.append(line.toLowerCase());
        for ( int i = 0; i < lowered.length(); i++ ) {
          c = lowered.charAt(i);
          if( ca > c || c > cz) continue;
          count[(c-ca)] += 1;
        }
        lowered.setLength(0);

      }

      for ( int i = 0; i < count.length; i++ ) {
        System.out.println(Character.valueOf((char)(ca + (char)i)).toString() + " : " + count[i]);
      }
    }
  } try(BufferedReader br = new BufferedReader(new InputStreamReader(System.in))) {

      String line;
      StringBuilder lowered = new StringBuilder();
      char c;
      char ca = "a".charAt(0);
      char cz = "z".charAt(0);
      int[] count = new int[26];

      while(true) {
        line = br.readLine();
        if ( line  == null || line.isEmpty() ) break;

        lowered.append(line.toLowerCase());
        for ( int i = 0; i < lowered.length(); i++ ) {
          c = lowered.charAt(i);
          if( ca > c || c > cz) continue;
          count[(c-ca)] += 1;
        }
        lowered.setLength(0);

      }

      for ( int i = 0; i < count.length; i++ ) {
        System.out.println(Character.valueOf((char)(ca + (char)i)).toString() + " : " + count[i]);
      }
    } {

      String line;
      StringBuilder lowered = new StringBuilder();
      char c;
      char ca = "a".charAt(0);
      char cz = "z".charAt(0);
      int[] count = new int[26];

      while(true) {
        line = br.readLine();
        if ( line  == null || line.isEmpty() ) break;

        lowered.append(line.toLowerCase());
        for ( int i = 0; i < lowered.length(); i++ ) {
          c = lowered.charAt(i);
          if( ca > c || c > cz) continue;
          count[(c-ca)] += 1;
        }
        lowered.setLength(0);

      }

      for ( int i = 0; i < count.length; i++ ) {
        System.out.println(Character.valueOf((char)(ca + (char)i)).toString() + " : " + count[i]);
      }
    } BufferedReader br = new BufferedReader(new InputStreamReader(System.in)) BufferedReader br = new BufferedReader(new InputStreamReader(System.in)) new BufferedReader(new InputStreamReader(System.in)) String line; line StringBuilder lowered = new StringBuilder(); lowered new StringBuilder() char c; c char ca = "a".charAt(0); ca "a".charAt(0) "a".charAt "a" 0 char cz = "z".charAt(0); cz "z".charAt(0) "z".charAt "z" 0 int[] count = new int[26]; count new int[26] 26 while(true) {
        line = br.readLine();
        if ( line  == null || line.isEmpty() ) break;

        lowered.append(line.toLowerCase());
        for ( int i = 0; i < lowered.length(); i++ ) {
          c = lowered.charAt(i);
          if( ca > c || c > cz) continue;
          count[(c-ca)] += 1;
        }
        lowered.setLength(0);

      } true {
        line = br.readLine();
        if ( line  == null || line.isEmpty() ) break;

        lowered.append(line.toLowerCase());
        for ( int i = 0; i < lowered.length(); i++ ) {
          c = lowered.charAt(i);
          if( ca > c || c > cz) continue;
          count[(c-ca)] += 1;
        }
        lowered.setLength(0);

      } line = br.readLine() line br.readLine() br.readLine br if ( line  == null || line.isEmpty() ) break; line  == null || line.isEmpty() line  == null line null line.isEmpty() line.isEmpty line break; lowered.append(line.toLowerCase()) lowered.append lowered line.toLowerCase() line.toLowerCase line for ( int i = 0; i < lowered.length(); i++ ) {
          c = lowered.charAt(i);
          if( ca > c || c > cz) continue;
          count[(c-ca)] += 1;
        } int i = 0; int i = 0; i 0 i < lowered.length() i lowered.length() lowered.length lowered i++ i++ i {
          c = lowered.charAt(i);
          if( ca > c || c > cz) continue;
          count[(c-ca)] += 1;
        } {
          c = lowered.charAt(i);
          if( ca > c || c > cz) continue;
          count[(c-ca)] += 1;
        } c = lowered.charAt(i) c lowered.charAt(i) lowered.charAt lowered i if( ca > c || c > cz) continue; ca > c || c > cz ca > c ca c c > cz c cz continue; count[(c-ca)] += 1 count[(c-ca)] count (c-ca) c ca 1 lowered.setLength(0) lowered.setLength lowered 0 for ( int i = 0; i < count.length; i++ ) {
        System.out.println(Character.valueOf((char)(ca + (char)i)).toString() + " : " + count[i]);
      } int i = 0; int i = 0; i 0 i < count.length i count.length count count.length i++ i++ i {
        System.out.println(Character.valueOf((char)(ca + (char)i)).toString() + " : " + count[i]);
      } {
        System.out.println(Character.valueOf((char)(ca + (char)i)).toString() + " : " + count[i]);
      } System.out.println(Character.valueOf((char)(ca + (char)i)).toString() + " : " + count[i]) System.out.println System.out System System.out Character.valueOf((char)(ca + (char)i)).toString() + " : " + count[i] Character.valueOf((char)(ca + (char)i)).toString() + " : " + count[i] Character.valueOf((char)(ca + (char)i)).toString() Character.valueOf((char)(ca + (char)i)).toString Character.valueOf((char)(ca + (char)i)) Character.valueOf Character (char)(ca + (char)i) ca (char)i " : " count[i] count i String[] args args public class Main {

  public static void main(String[] args) throws IOException {
    
    try(BufferedReader br = new BufferedReader(new InputStreamReader(System.in))) {

      String line;
      StringBuilder lowered = new StringBuilder();
      char c;
      char ca = "a".charAt(0);
      char cz = "z".charAt(0);
      int[] count = new int[26];

      while(true) {
        line = br.readLine();
        if ( line  == null || line.isEmpty() ) break;

        lowered.append(line.toLowerCase());
        for ( int i = 0; i < lowered.length(); i++ ) {
          c = lowered.charAt(i);
          if( ca > c || c > cz) continue;
          count[(c-ca)] += 1;
        }
        lowered.setLength(0);

      }

      for ( int i = 0; i < count.length; i++ ) {
        System.out.println(Character.valueOf((char)(ca + (char)i)).toString() + " : " + count[i]);
      }
    }
  }
} public class Main {

  public static void main(String[] args) throws IOException {
    
    try(BufferedReader br = new BufferedReader(new InputStreamReader(System.in))) {

      String line;
      StringBuilder lowered = new StringBuilder();
      char c;
      char ca = "a".charAt(0);
      char cz = "z".charAt(0);
      int[] count = new int[26];

      while(true) {
        line = br.readLine();
        if ( line  == null || line.isEmpty() ) break;

        lowered.append(line.toLowerCase());
        for ( int i = 0; i < lowered.length(); i++ ) {
          c = lowered.charAt(i);
          if( ca > c || c > cz) continue;
          count[(c-ca)] += 1;
        }
        lowered.setLength(0);

      }

      for ( int i = 0; i < count.length; i++ ) {
        System.out.println(Character.valueOf((char)(ca + (char)i)).toString() + " : " + count[i]);
      }
    }
  }
} Main
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Main {

  public static void main(String[] args) throws IOException {
    
    try(BufferedReader br = new BufferedReader(new InputStreamReader(System.in))) {

      String line;
      StringBuilder lowered = new StringBuilder();
      char c;
      char ca = "a".charAt(0);
      char cz = "z".charAt(0);
      int[] count = new int[26];

      while(true) {
        line = br.readLine();
        if ( line  == null || line.isEmpty() ) break;

        lowered.append(line.toLowerCase());
        for ( int i = 0; i < lowered.length(); i++ ) {
          c = lowered.charAt(i);
          if( ca > c || c > cz) continue;
          count[(c-ca)] += 1;
        }
        lowered.setLength(0);

      }

      for ( int i = 0; i < count.length; i++ ) {
        System.out.println(Character.valueOf((char)(ca + (char)i)).toString() + " : " + count[i]);
      }
    }
  }
}
