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

public class Main {

	public static void main(String[] args) {
		try {
			String[] alpha = { "a", "b", "c", "d", "e", "f", "g", "h", "i",
					"j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u",
					"v", "w", "x", "y", "z" };
			int[] alpha_int = new int[26];

			BufferedReader stdReader = new BufferedReader(
					new InputStreamReader(System.in));
			String line;
			while ((line = stdReader.readLine()) != null) {

				int length1 = 0;
				int length2 = 0;


					String s = line;
					length1 = s.length();
					for (int j = 0; j < 26; j++) {
						s = s.toLowerCase();
						s = s.replaceAll(alpha[j], "");
						length2 = s.length();
						alpha_int[j] += length1 - length2;
						s = line;
					}

				

			}
			
			for (int i = 0; i < 26; i++) {
				System.out.print(alpha[i]);
				System.out.print(" : ");
				System.out.println(alpha_int[i]);
			}
			
		} catch (Exception e) {
			e.getStackTrace();
			System.exit(0);
		}
	}
} import java.io.BufferedReader; BufferedReader java.io import java.io.InputStreamReader; InputStreamReader java.io public class Main {

	public static void main(String[] args) {
		try {
			String[] alpha = { "a", "b", "c", "d", "e", "f", "g", "h", "i",
					"j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u",
					"v", "w", "x", "y", "z" };
			int[] alpha_int = new int[26];

			BufferedReader stdReader = new BufferedReader(
					new InputStreamReader(System.in));
			String line;
			while ((line = stdReader.readLine()) != null) {

				int length1 = 0;
				int length2 = 0;


					String s = line;
					length1 = s.length();
					for (int j = 0; j < 26; j++) {
						s = s.toLowerCase();
						s = s.replaceAll(alpha[j], "");
						length2 = s.length();
						alpha_int[j] += length1 - length2;
						s = line;
					}

				

			}
			
			for (int i = 0; i < 26; i++) {
				System.out.print(alpha[i]);
				System.out.print(" : ");
				System.out.println(alpha_int[i]);
			}
			
		} catch (Exception e) {
			e.getStackTrace();
			System.exit(0);
		}
	}
} Main public static void main(String[] args) {
		try {
			String[] alpha = { "a", "b", "c", "d", "e", "f", "g", "h", "i",
					"j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u",
					"v", "w", "x", "y", "z" };
			int[] alpha_int = new int[26];

			BufferedReader stdReader = new BufferedReader(
					new InputStreamReader(System.in));
			String line;
			while ((line = stdReader.readLine()) != null) {

				int length1 = 0;
				int length2 = 0;


					String s = line;
					length1 = s.length();
					for (int j = 0; j < 26; j++) {
						s = s.toLowerCase();
						s = s.replaceAll(alpha[j], "");
						length2 = s.length();
						alpha_int[j] += length1 - length2;
						s = line;
					}

				

			}
			
			for (int i = 0; i < 26; i++) {
				System.out.print(alpha[i]);
				System.out.print(" : ");
				System.out.println(alpha_int[i]);
			}
			
		} catch (Exception e) {
			e.getStackTrace();
			System.exit(0);
		}
	} main {
		try {
			String[] alpha = { "a", "b", "c", "d", "e", "f", "g", "h", "i",
					"j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u",
					"v", "w", "x", "y", "z" };
			int[] alpha_int = new int[26];

			BufferedReader stdReader = new BufferedReader(
					new InputStreamReader(System.in));
			String line;
			while ((line = stdReader.readLine()) != null) {

				int length1 = 0;
				int length2 = 0;


					String s = line;
					length1 = s.length();
					for (int j = 0; j < 26; j++) {
						s = s.toLowerCase();
						s = s.replaceAll(alpha[j], "");
						length2 = s.length();
						alpha_int[j] += length1 - length2;
						s = line;
					}

				

			}
			
			for (int i = 0; i < 26; i++) {
				System.out.print(alpha[i]);
				System.out.print(" : ");
				System.out.println(alpha_int[i]);
			}
			
		} catch (Exception e) {
			e.getStackTrace();
			System.exit(0);
		}
	} try {
			String[] alpha = { "a", "b", "c", "d", "e", "f", "g", "h", "i",
					"j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u",
					"v", "w", "x", "y", "z" };
			int[] alpha_int = new int[26];

			BufferedReader stdReader = new BufferedReader(
					new InputStreamReader(System.in));
			String line;
			while ((line = stdReader.readLine()) != null) {

				int length1 = 0;
				int length2 = 0;


					String s = line;
					length1 = s.length();
					for (int j = 0; j < 26; j++) {
						s = s.toLowerCase();
						s = s.replaceAll(alpha[j], "");
						length2 = s.length();
						alpha_int[j] += length1 - length2;
						s = line;
					}

				

			}
			
			for (int i = 0; i < 26; i++) {
				System.out.print(alpha[i]);
				System.out.print(" : ");
				System.out.println(alpha_int[i]);
			}
			
		} catch (Exception e) {
			e.getStackTrace();
			System.exit(0);
		} catch (Exception e) {
			e.getStackTrace();
			System.exit(0);
		} Exception e {
			e.getStackTrace();
			System.exit(0);
		} e.getStackTrace() e.getStackTrace e System.exit(0) System.exit System 0 {
			String[] alpha = { "a", "b", "c", "d", "e", "f", "g", "h", "i",
					"j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u",
					"v", "w", "x", "y", "z" };
			int[] alpha_int = new int[26];

			BufferedReader stdReader = new BufferedReader(
					new InputStreamReader(System.in));
			String line;
			while ((line = stdReader.readLine()) != null) {

				int length1 = 0;
				int length2 = 0;


					String s = line;
					length1 = s.length();
					for (int j = 0; j < 26; j++) {
						s = s.toLowerCase();
						s = s.replaceAll(alpha[j], "");
						length2 = s.length();
						alpha_int[j] += length1 - length2;
						s = line;
					}

				

			}
			
			for (int i = 0; i < 26; i++) {
				System.out.print(alpha[i]);
				System.out.print(" : ");
				System.out.println(alpha_int[i]);
			}
			
		} String[] alpha = { "a", "b", "c", "d", "e", "f", "g", "h", "i",
					"j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u",
					"v", "w", "x", "y", "z" }; alpha { "a", "b", "c", "d", "e", "f", "g", "h", "i",
					"j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u",
					"v", "w", "x", "y", "z" } "a" "b" "c" "d" "e" "f" "g" "h" "i" "j" "k" "l" "m" "n" "o" "p" "q" "r" "s" "t" "u" "v" "w" "x" "y" "z" int[] alpha_int = new int[26]; alpha_int new int[26] 26 BufferedReader stdReader = new BufferedReader(
					new InputStreamReader(System.in)); stdReader new BufferedReader(
					new InputStreamReader(System.in)) String line; line while ((line = stdReader.readLine()) != null) {

				int length1 = 0;
				int length2 = 0;


					String s = line;
					length1 = s.length();
					for (int j = 0; j < 26; j++) {
						s = s.toLowerCase();
						s = s.replaceAll(alpha[j], "");
						length2 = s.length();
						alpha_int[j] += length1 - length2;
						s = line;
					}

				

			} (line = stdReader.readLine()) != null (line = stdReader.readLine()) line stdReader.readLine() stdReader.readLine stdReader null {

				int length1 = 0;
				int length2 = 0;


					String s = line;
					length1 = s.length();
					for (int j = 0; j < 26; j++) {
						s = s.toLowerCase();
						s = s.replaceAll(alpha[j], "");
						length2 = s.length();
						alpha_int[j] += length1 - length2;
						s = line;
					}

				

			} int length1 = 0; length1 0 int length2 = 0; length2 0 String s = line; s line length1 = s.length() length1 s.length() s.length s for (int j = 0; j < 26; j++) {
						s = s.toLowerCase();
						s = s.replaceAll(alpha[j], "");
						length2 = s.length();
						alpha_int[j] += length1 - length2;
						s = line;
					} int j = 0; int j = 0; j 0 j < 26 j 26 j++ j++ j {
						s = s.toLowerCase();
						s = s.replaceAll(alpha[j], "");
						length2 = s.length();
						alpha_int[j] += length1 - length2;
						s = line;
					} {
						s = s.toLowerCase();
						s = s.replaceAll(alpha[j], "");
						length2 = s.length();
						alpha_int[j] += length1 - length2;
						s = line;
					} s = s.toLowerCase() s s.toLowerCase() s.toLowerCase s s = s.replaceAll(alpha[j], "") s s.replaceAll(alpha[j], "") s.replaceAll s alpha[j] alpha j "" length2 = s.length() length2 s.length() s.length s alpha_int[j] += length1 - length2 alpha_int[j] alpha_int j length1 - length2 length1 length2 s = line s line for (int i = 0; i < 26; i++) {
				System.out.print(alpha[i]);
				System.out.print(" : ");
				System.out.println(alpha_int[i]);
			} int i = 0; int i = 0; i 0 i < 26 i 26 i++ i++ i {
				System.out.print(alpha[i]);
				System.out.print(" : ");
				System.out.println(alpha_int[i]);
			} {
				System.out.print(alpha[i]);
				System.out.print(" : ");
				System.out.println(alpha_int[i]);
			} System.out.print(alpha[i]) System.out.print System.out System System.out alpha[i] alpha i System.out.print(" : ") System.out.print System.out System System.out " : " System.out.println(alpha_int[i]) System.out.println System.out System System.out alpha_int[i] alpha_int i String[] args args public class Main {

	public static void main(String[] args) {
		try {
			String[] alpha = { "a", "b", "c", "d", "e", "f", "g", "h", "i",
					"j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u",
					"v", "w", "x", "y", "z" };
			int[] alpha_int = new int[26];

			BufferedReader stdReader = new BufferedReader(
					new InputStreamReader(System.in));
			String line;
			while ((line = stdReader.readLine()) != null) {

				int length1 = 0;
				int length2 = 0;


					String s = line;
					length1 = s.length();
					for (int j = 0; j < 26; j++) {
						s = s.toLowerCase();
						s = s.replaceAll(alpha[j], "");
						length2 = s.length();
						alpha_int[j] += length1 - length2;
						s = line;
					}

				

			}
			
			for (int i = 0; i < 26; i++) {
				System.out.print(alpha[i]);
				System.out.print(" : ");
				System.out.println(alpha_int[i]);
			}
			
		} catch (Exception e) {
			e.getStackTrace();
			System.exit(0);
		}
	}
} public class Main {

	public static void main(String[] args) {
		try {
			String[] alpha = { "a", "b", "c", "d", "e", "f", "g", "h", "i",
					"j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u",
					"v", "w", "x", "y", "z" };
			int[] alpha_int = new int[26];

			BufferedReader stdReader = new BufferedReader(
					new InputStreamReader(System.in));
			String line;
			while ((line = stdReader.readLine()) != null) {

				int length1 = 0;
				int length2 = 0;


					String s = line;
					length1 = s.length();
					for (int j = 0; j < 26; j++) {
						s = s.toLowerCase();
						s = s.replaceAll(alpha[j], "");
						length2 = s.length();
						alpha_int[j] += length1 - length2;
						s = line;
					}

				

			}
			
			for (int i = 0; i < 26; i++) {
				System.out.print(alpha[i]);
				System.out.print(" : ");
				System.out.println(alpha_int[i]);
			}
			
		} catch (Exception e) {
			e.getStackTrace();
			System.exit(0);
		}
	}
} Main
import java.io.BufferedReader;
import java.io.InputStreamReader;

public class Main {

	public static void main(String[] args) {
		try {
			String[] alpha = { "a", "b", "c", "d", "e", "f", "g", "h", "i",
					"j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u",
					"v", "w", "x", "y", "z" };
			int[] alpha_int = new int[26];

			BufferedReader stdReader = new BufferedReader(
					new InputStreamReader(System.in));
			String line;
			while ((line = stdReader.readLine()) != null) {

				int length1 = 0;
				int length2 = 0;


					String s = line;
					length1 = s.length();
					for (int j = 0; j < 26; j++) {
						s = s.toLowerCase();
						s = s.replaceAll(alpha[j], "");
						length2 = s.length();
						alpha_int[j] += length1 - length2;
						s = line;
					}

				

			}
			
			for (int i = 0; i < 26; i++) {
				System.out.print(alpha[i]);
				System.out.print(" : ");
				System.out.println(alpha_int[i]);
			}
			
		} catch (Exception e) {
			e.getStackTrace();
			System.exit(0);
		}
	}
}