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

// (1) ??¢??????????????????????????°???????´??????????????????°count???????????????
// (2) ??????????????????????????????
// (3) ??????????????????????????????????????°?????????1??????????????\?????????????????????
	// (4.1) ????±???¨??????1?????????Char??????????????????
		// (4.1.1)??¢???????????????????????°???????????\?????????????????????
			// (4.1.1.1) ??????????????????????´?????????¢????????????????????¨
            //		     ????±???¨??????1?????????ASCII?????????????????´????????´????????\?????????????????????
				// (4.1.1.1.1) ?????°count?????°???????¢???????
			// (4.1.1.2) ?????????????±???¨??????1???????????§???????????´????????\?????????????????????
				// (4.1.1.2.1) ?°??????????????????????
					// (4.1.1.2.1.1) ??????????°??????????????????????????????¨
                    //               ????±???¨??????1?????????ASCII?????????????????´????????´?????\?????????????????????
						// (4.1.1.2.1.1.1) count?????°???????¢???????
		// (4.1.2) ??¢???????????????????????°????????\?????????????????????
			// (4.1.2.1) ??¢????????????????????¨count??????????????¨?????????

public class Main {

	public static void main(String[] args) throws IOException {
		final char ASCII_CODE_BASE = 97;

		int counts[] = new int[26];


		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

		String str;
		while((str = br.readLine()) != null) {

			for (int i = 0; i < str.length(); i++) {
				char c = str.charAt(i);
				if(Character.isAlphabetic(c)) {
					char lowerChar = Character.toLowerCase(c);
					counts[lowerChar - ASCII_CODE_BASE]++;
				}
			}
		}

		for (int i = 0; i < counts.length; i++) {
			System.out.println((char)(i+ASCII_CODE_BASE) + " : " + counts[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 {
		final char ASCII_CODE_BASE = 97;

		int counts[] = new int[26];


		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

		String str;
		while((str = br.readLine()) != null) {

			for (int i = 0; i < str.length(); i++) {
				char c = str.charAt(i);
				if(Character.isAlphabetic(c)) {
					char lowerChar = Character.toLowerCase(c);
					counts[lowerChar - ASCII_CODE_BASE]++;
				}
			}
		}

		for (int i = 0; i < counts.length; i++) {
			System.out.println((char)(i+ASCII_CODE_BASE) + " : " + counts[i]);
		}
	}
} Main public static void main(String[] args) throws IOException {
		final char ASCII_CODE_BASE = 97;

		int counts[] = new int[26];


		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

		String str;
		while((str = br.readLine()) != null) {

			for (int i = 0; i < str.length(); i++) {
				char c = str.charAt(i);
				if(Character.isAlphabetic(c)) {
					char lowerChar = Character.toLowerCase(c);
					counts[lowerChar - ASCII_CODE_BASE]++;
				}
			}
		}

		for (int i = 0; i < counts.length; i++) {
			System.out.println((char)(i+ASCII_CODE_BASE) + " : " + counts[i]);
		}
	} main {
		final char ASCII_CODE_BASE = 97;

		int counts[] = new int[26];


		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

		String str;
		while((str = br.readLine()) != null) {

			for (int i = 0; i < str.length(); i++) {
				char c = str.charAt(i);
				if(Character.isAlphabetic(c)) {
					char lowerChar = Character.toLowerCase(c);
					counts[lowerChar - ASCII_CODE_BASE]++;
				}
			}
		}

		for (int i = 0; i < counts.length; i++) {
			System.out.println((char)(i+ASCII_CODE_BASE) + " : " + counts[i]);
		}
	} final char ASCII_CODE_BASE = 97; ASCII_CODE_BASE 97 int counts[] = new int[26]; counts new int[26] 26 BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); br new BufferedReader(new InputStreamReader(System.in)) String str; str while((str = br.readLine()) != null) {

			for (int i = 0; i < str.length(); i++) {
				char c = str.charAt(i);
				if(Character.isAlphabetic(c)) {
					char lowerChar = Character.toLowerCase(c);
					counts[lowerChar - ASCII_CODE_BASE]++;
				}
			}
		} (str = br.readLine()) != null (str = br.readLine()) str br.readLine() br.readLine br null {

			for (int i = 0; i < str.length(); i++) {
				char c = str.charAt(i);
				if(Character.isAlphabetic(c)) {
					char lowerChar = Character.toLowerCase(c);
					counts[lowerChar - ASCII_CODE_BASE]++;
				}
			}
		} for (int i = 0; i < str.length(); i++) {
				char c = str.charAt(i);
				if(Character.isAlphabetic(c)) {
					char lowerChar = Character.toLowerCase(c);
					counts[lowerChar - ASCII_CODE_BASE]++;
				}
			} int i = 0; int i = 0; i 0 i < str.length() i str.length() str.length str i++ i++ i {
				char c = str.charAt(i);
				if(Character.isAlphabetic(c)) {
					char lowerChar = Character.toLowerCase(c);
					counts[lowerChar - ASCII_CODE_BASE]++;
				}
			} {
				char c = str.charAt(i);
				if(Character.isAlphabetic(c)) {
					char lowerChar = Character.toLowerCase(c);
					counts[lowerChar - ASCII_CODE_BASE]++;
				}
			} char c = str.charAt(i); c str.charAt(i) str.charAt str i if(Character.isAlphabetic(c)) {
					char lowerChar = Character.toLowerCase(c);
					counts[lowerChar - ASCII_CODE_BASE]++;
				} Character.isAlphabetic(c) Character.isAlphabetic Character c {
					char lowerChar = Character.toLowerCase(c);
					counts[lowerChar - ASCII_CODE_BASE]++;
				} char lowerChar = Character.toLowerCase(c); lowerChar Character.toLowerCase(c) Character.toLowerCase Character c counts[lowerChar - ASCII_CODE_BASE]++ counts[lowerChar - ASCII_CODE_BASE] counts lowerChar - ASCII_CODE_BASE lowerChar ASCII_CODE_BASE for (int i = 0; i < counts.length; i++) {
			System.out.println((char)(i+ASCII_CODE_BASE) + " : " + counts[i]);
		} int i = 0; int i = 0; i 0 i < counts.length i counts.length counts counts.length i++ i++ i {
			System.out.println((char)(i+ASCII_CODE_BASE) + " : " + counts[i]);
		} {
			System.out.println((char)(i+ASCII_CODE_BASE) + " : " + counts[i]);
		} System.out.println((char)(i+ASCII_CODE_BASE) + " : " + counts[i]) System.out.println System.out System System.out (char)(i+ASCII_CODE_BASE) + " : " + counts[i] (char)(i+ASCII_CODE_BASE) + " : " + counts[i] (char)(i+ASCII_CODE_BASE) i ASCII_CODE_BASE " : " counts[i] counts i String[] args args public class Main {

	public static void main(String[] args) throws IOException {
		final char ASCII_CODE_BASE = 97;

		int counts[] = new int[26];


		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

		String str;
		while((str = br.readLine()) != null) {

			for (int i = 0; i < str.length(); i++) {
				char c = str.charAt(i);
				if(Character.isAlphabetic(c)) {
					char lowerChar = Character.toLowerCase(c);
					counts[lowerChar - ASCII_CODE_BASE]++;
				}
			}
		}

		for (int i = 0; i < counts.length; i++) {
			System.out.println((char)(i+ASCII_CODE_BASE) + " : " + counts[i]);
		}
	}
} public class Main {

	public static void main(String[] args) throws IOException {
		final char ASCII_CODE_BASE = 97;

		int counts[] = new int[26];


		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

		String str;
		while((str = br.readLine()) != null) {

			for (int i = 0; i < str.length(); i++) {
				char c = str.charAt(i);
				if(Character.isAlphabetic(c)) {
					char lowerChar = Character.toLowerCase(c);
					counts[lowerChar - ASCII_CODE_BASE]++;
				}
			}
		}

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

// (1) ??¢??????????????????????????°???????´??????????????????°count???????????????
// (2) ??????????????????????????????
// (3) ??????????????????????????????????????°?????????1??????????????\?????????????????????
	// (4.1) ????±???¨??????1?????????Char??????????????????
		// (4.1.1)??¢???????????????????????°???????????\?????????????????????
			// (4.1.1.1) ??????????????????????´?????????¢????????????????????¨
            //		     ????±???¨??????1?????????ASCII?????????????????´????????´????????\?????????????????????
				// (4.1.1.1.1) ?????°count?????°???????¢???????
			// (4.1.1.2) ?????????????±???¨??????1???????????§???????????´????????\?????????????????????
				// (4.1.1.2.1) ?°??????????????????????
					// (4.1.1.2.1.1) ??????????°??????????????????????????????¨
                    //               ????±???¨??????1?????????ASCII?????????????????´????????´?????\?????????????????????
						// (4.1.1.2.1.1.1) count?????°???????¢???????
		// (4.1.2) ??¢???????????????????????°????????\?????????????????????
			// (4.1.2.1) ??¢????????????????????¨count??????????????¨?????????

public class Main {

	public static void main(String[] args) throws IOException {
		final char ASCII_CODE_BASE = 97;

		int counts[] = new int[26];


		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

		String str;
		while((str = br.readLine()) != null) {

			for (int i = 0; i < str.length(); i++) {
				char c = str.charAt(i);
				if(Character.isAlphabetic(c)) {
					char lowerChar = Character.toLowerCase(c);
					counts[lowerChar - ASCII_CODE_BASE]++;
				}
			}
		}

		for (int i = 0; i < counts.length; i++) {
			System.out.println((char)(i+ASCII_CODE_BASE) + " : " + counts[i]);
		}
	}
}