import java.util.Scanner;

public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int[] list = new int[26];
    while (sc.hasNext()) {
      char[] cList = sc.nextLine().toLowerCase().toCharArray();
      for (char c : cList) {
        int num = c;
        if (num >= 'a' && num <= 'z') {
          list[num - 'a'] += 1;
        }
      }
    }
    for (int i = 0; i < list.length; i++) {
      System.out.printf("%c : %d\n", i + 'a', list[i]);
    }
  }
} import java.util.Scanner; Scanner java.util public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int[] list = new int[26];
    while (sc.hasNext()) {
      char[] cList = sc.nextLine().toLowerCase().toCharArray();
      for (char c : cList) {
        int num = c;
        if (num >= 'a' && num <= 'z') {
          list[num - 'a'] += 1;
        }
      }
    }
    for (int i = 0; i < list.length; i++) {
      System.out.printf("%c : %d\n", i + 'a', list[i]);
    }
  }
} Main public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int[] list = new int[26];
    while (sc.hasNext()) {
      char[] cList = sc.nextLine().toLowerCase().toCharArray();
      for (char c : cList) {
        int num = c;
        if (num >= 'a' && num <= 'z') {
          list[num - 'a'] += 1;
        }
      }
    }
    for (int i = 0; i < list.length; i++) {
      System.out.printf("%c : %d\n", i + 'a', list[i]);
    }
  } main {
    Scanner sc = new Scanner(System.in);
    int[] list = new int[26];
    while (sc.hasNext()) {
      char[] cList = sc.nextLine().toLowerCase().toCharArray();
      for (char c : cList) {
        int num = c;
        if (num >= 'a' && num <= 'z') {
          list[num - 'a'] += 1;
        }
      }
    }
    for (int i = 0; i < list.length; i++) {
      System.out.printf("%c : %d\n", i + 'a', list[i]);
    }
  } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int[] list = new int[26]; list new int[26] 26 while (sc.hasNext()) {
      char[] cList = sc.nextLine().toLowerCase().toCharArray();
      for (char c : cList) {
        int num = c;
        if (num >= 'a' && num <= 'z') {
          list[num - 'a'] += 1;
        }
      }
    } sc.hasNext() sc.hasNext sc {
      char[] cList = sc.nextLine().toLowerCase().toCharArray();
      for (char c : cList) {
        int num = c;
        if (num >= 'a' && num <= 'z') {
          list[num - 'a'] += 1;
        }
      }
    } char[] cList = sc.nextLine().toLowerCase().toCharArray(); cList sc.nextLine().toLowerCase().toCharArray() sc.nextLine().toLowerCase().toCharArray sc.nextLine().toLowerCase() sc.nextLine().toLowerCase sc.nextLine() sc.nextLine sc for (char c : cList) {
        int num = c;
        if (num >= 'a' && num <= 'z') {
          list[num - 'a'] += 1;
        }
      } char c cList {
        int num = c;
        if (num >= 'a' && num <= 'z') {
          list[num - 'a'] += 1;
        }
      } {
        int num = c;
        if (num >= 'a' && num <= 'z') {
          list[num - 'a'] += 1;
        }
      } int num = c; num c if (num >= 'a' && num <= 'z') {
          list[num - 'a'] += 1;
        } num >= 'a' && num <= 'z' num >= 'a' num 'a' num <= 'z' num 'z' {
          list[num - 'a'] += 1;
        } list[num - 'a'] += 1 list[num - 'a'] list num - 'a' num 'a' 1 for (int i = 0; i < list.length; i++) {
      System.out.printf("%c : %d\n", i + 'a', list[i]);
    } int i = 0; int i = 0; i 0 i < list.length i list.length list list.length i++ i++ i {
      System.out.printf("%c : %d\n", i + 'a', list[i]);
    } {
      System.out.printf("%c : %d\n", i + 'a', list[i]);
    } System.out.printf("%c : %d\n", i + 'a', list[i]) System.out.printf System.out System System.out "%c : %d\n" i + 'a' i 'a' list[i] list i String[] args args public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int[] list = new int[26];
    while (sc.hasNext()) {
      char[] cList = sc.nextLine().toLowerCase().toCharArray();
      for (char c : cList) {
        int num = c;
        if (num >= 'a' && num <= 'z') {
          list[num - 'a'] += 1;
        }
      }
    }
    for (int i = 0; i < list.length; i++) {
      System.out.printf("%c : %d\n", i + 'a', list[i]);
    }
  }
} public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int[] list = new int[26];
    while (sc.hasNext()) {
      char[] cList = sc.nextLine().toLowerCase().toCharArray();
      for (char c : cList) {
        int num = c;
        if (num >= 'a' && num <= 'z') {
          list[num - 'a'] += 1;
        }
      }
    }
    for (int i = 0; i < list.length; i++) {
      System.out.printf("%c : %d\n", i + 'a', list[i]);
    }
  }
} Main
import java.util.Scanner;

public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int[] list = new int[26];
    while (sc.hasNext()) {
      char[] cList = sc.nextLine().toLowerCase().toCharArray();
      for (char c : cList) {
        int num = c;
        if (num >= 'a' && num <= 'z') {
          list[num - 'a'] += 1;
        }
      }
    }
    for (int i = 0; i < list.length; i++) {
      System.out.printf("%c : %d\n", i + 'a', list[i]);
    }
  }
}
