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

public class Main {
    public void exec() throws IOException {
    	BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    	PrintWriter out = new PrintWriter(System.out);
    	int[] count = new int[26];
    	while (br.ready()){
        	String l = br.readLine();
        	for(char c: l.toCharArray()) {
        		int alpIdx = -1;
        		if ('a' <= c && c <= 'z') {
        			alpIdx = c - 'a';
        		}else if ('A' <= c && c <= 'Z'){
        			alpIdx = c - 'A';
        		}
        		if(alpIdx>=0){
        			count[alpIdx]++;
        		} 
        	}
    	}
    	char c = 'a';
    	int i = 0;
    	while(i<count.length) {
    		out.print(c++);
    		out.print(" : ");
    		out.println(count[i++]);
    	}
        out.flush();
    }
 
    public static void main(String[] args) throws IOException {
    	new Main().exec();
    }
} import java.io.BufferedReader; BufferedReader java.io import java.io.IOException; IOException java.io import java.io.InputStreamReader; InputStreamReader java.io import java.io.PrintWriter; PrintWriter java.io public class Main {
    public void exec() throws IOException {
    	BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    	PrintWriter out = new PrintWriter(System.out);
    	int[] count = new int[26];
    	while (br.ready()){
        	String l = br.readLine();
        	for(char c: l.toCharArray()) {
        		int alpIdx = -1;
        		if ('a' <= c && c <= 'z') {
        			alpIdx = c - 'a';
        		}else if ('A' <= c && c <= 'Z'){
        			alpIdx = c - 'A';
        		}
        		if(alpIdx>=0){
        			count[alpIdx]++;
        		} 
        	}
    	}
    	char c = 'a';
    	int i = 0;
    	while(i<count.length) {
    		out.print(c++);
    		out.print(" : ");
    		out.println(count[i++]);
    	}
        out.flush();
    }
 
    public static void main(String[] args) throws IOException {
    	new Main().exec();
    }
} Main public void exec() throws IOException {
    	BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    	PrintWriter out = new PrintWriter(System.out);
    	int[] count = new int[26];
    	while (br.ready()){
        	String l = br.readLine();
        	for(char c: l.toCharArray()) {
        		int alpIdx = -1;
        		if ('a' <= c && c <= 'z') {
        			alpIdx = c - 'a';
        		}else if ('A' <= c && c <= 'Z'){
        			alpIdx = c - 'A';
        		}
        		if(alpIdx>=0){
        			count[alpIdx]++;
        		} 
        	}
    	}
    	char c = 'a';
    	int i = 0;
    	while(i<count.length) {
    		out.print(c++);
    		out.print(" : ");
    		out.println(count[i++]);
    	}
        out.flush();
    } exec {
    	BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    	PrintWriter out = new PrintWriter(System.out);
    	int[] count = new int[26];
    	while (br.ready()){
        	String l = br.readLine();
        	for(char c: l.toCharArray()) {
        		int alpIdx = -1;
        		if ('a' <= c && c <= 'z') {
        			alpIdx = c - 'a';
        		}else if ('A' <= c && c <= 'Z'){
        			alpIdx = c - 'A';
        		}
        		if(alpIdx>=0){
        			count[alpIdx]++;
        		} 
        	}
    	}
    	char c = 'a';
    	int i = 0;
    	while(i<count.length) {
    		out.print(c++);
    		out.print(" : ");
    		out.println(count[i++]);
    	}
        out.flush();
    } BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); br new BufferedReader(new InputStreamReader(System.in)) PrintWriter out = new PrintWriter(System.out); out new PrintWriter(System.out) int[] count = new int[26]; count new int[26] 26 while (br.ready()){
        	String l = br.readLine();
        	for(char c: l.toCharArray()) {
        		int alpIdx = -1;
        		if ('a' <= c && c <= 'z') {
        			alpIdx = c - 'a';
        		}else if ('A' <= c && c <= 'Z'){
        			alpIdx = c - 'A';
        		}
        		if(alpIdx>=0){
        			count[alpIdx]++;
        		} 
        	}
    	} br.ready() br.ready br {
        	String l = br.readLine();
        	for(char c: l.toCharArray()) {
        		int alpIdx = -1;
        		if ('a' <= c && c <= 'z') {
        			alpIdx = c - 'a';
        		}else if ('A' <= c && c <= 'Z'){
        			alpIdx = c - 'A';
        		}
        		if(alpIdx>=0){
        			count[alpIdx]++;
        		} 
        	}
    	} String l = br.readLine(); l br.readLine() br.readLine br for(char c: l.toCharArray()) {
        		int alpIdx = -1;
        		if ('a' <= c && c <= 'z') {
        			alpIdx = c - 'a';
        		}else if ('A' <= c && c <= 'Z'){
        			alpIdx = c - 'A';
        		}
        		if(alpIdx>=0){
        			count[alpIdx]++;
        		} 
        	} char c l.toCharArray() l.toCharArray l {
        		int alpIdx = -1;
        		if ('a' <= c && c <= 'z') {
        			alpIdx = c - 'a';
        		}else if ('A' <= c && c <= 'Z'){
        			alpIdx = c - 'A';
        		}
        		if(alpIdx>=0){
        			count[alpIdx]++;
        		} 
        	} {
        		int alpIdx = -1;
        		if ('a' <= c && c <= 'z') {
        			alpIdx = c - 'a';
        		}else if ('A' <= c && c <= 'Z'){
        			alpIdx = c - 'A';
        		}
        		if(alpIdx>=0){
        			count[alpIdx]++;
        		} 
        	} int alpIdx = -1; alpIdx -1 1 if ('a' <= c && c <= 'z') {
        			alpIdx = c - 'a';
        		}else if ('A' <= c && c <= 'Z'){
        			alpIdx = c - 'A';
        		} 'a' <= c && c <= 'z' 'a' <= c 'a' c c <= 'z' c 'z' {
        			alpIdx = c - 'a';
        		} alpIdx = c - 'a' alpIdx c - 'a' c 'a' if ('A' <= c && c <= 'Z'){
        			alpIdx = c - 'A';
        		} 'A' <= c && c <= 'Z' 'A' <= c 'A' c c <= 'Z' c 'Z' {
        			alpIdx = c - 'A';
        		} alpIdx = c - 'A' alpIdx c - 'A' c 'A' if(alpIdx>=0){
        			count[alpIdx]++;
        		} alpIdx>=0 alpIdx 0 {
        			count[alpIdx]++;
        		} count[alpIdx]++ count[alpIdx] count alpIdx char c = 'a'; c 'a' int i = 0; i 0 while(i<count.length) {
    		out.print(c++);
    		out.print(" : ");
    		out.println(count[i++]);
    	} i<count.length i count.length count count.length {
    		out.print(c++);
    		out.print(" : ");
    		out.println(count[i++]);
    	} out.print(c++) out.print out c++ c out.print(" : ") out.print out " : " out.println(count[i++]) out.println out count[i++] count i++ i out.flush() out.flush out public static void main(String[] args) throws IOException {
    	new Main().exec();
    } main {
    	new Main().exec();
    } new Main().exec() new Main().exec new Main() String[] args args public class Main {
    public void exec() throws IOException {
    	BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    	PrintWriter out = new PrintWriter(System.out);
    	int[] count = new int[26];
    	while (br.ready()){
        	String l = br.readLine();
        	for(char c: l.toCharArray()) {
        		int alpIdx = -1;
        		if ('a' <= c && c <= 'z') {
        			alpIdx = c - 'a';
        		}else if ('A' <= c && c <= 'Z'){
        			alpIdx = c - 'A';
        		}
        		if(alpIdx>=0){
        			count[alpIdx]++;
        		} 
        	}
    	}
    	char c = 'a';
    	int i = 0;
    	while(i<count.length) {
    		out.print(c++);
    		out.print(" : ");
    		out.println(count[i++]);
    	}
        out.flush();
    }
 
    public static void main(String[] args) throws IOException {
    	new Main().exec();
    }
} public class Main {
    public void exec() throws IOException {
    	BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    	PrintWriter out = new PrintWriter(System.out);
    	int[] count = new int[26];
    	while (br.ready()){
        	String l = br.readLine();
        	for(char c: l.toCharArray()) {
        		int alpIdx = -1;
        		if ('a' <= c && c <= 'z') {
        			alpIdx = c - 'a';
        		}else if ('A' <= c && c <= 'Z'){
        			alpIdx = c - 'A';
        		}
        		if(alpIdx>=0){
        			count[alpIdx]++;
        		} 
        	}
    	}
    	char c = 'a';
    	int i = 0;
    	while(i<count.length) {
    		out.print(c++);
    		out.print(" : ");
    		out.println(count[i++]);
    	}
        out.flush();
    }
 
    public static void main(String[] args) throws IOException {
    	new Main().exec();
    }
} Main
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;

public class Main {
    public void exec() throws IOException {
    	BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    	PrintWriter out = new PrintWriter(System.out);
    	int[] count = new int[26];
    	while (br.ready()){
        	String l = br.readLine();
        	for(char c: l.toCharArray()) {
        		int alpIdx = -1;
        		if ('a' <= c && c <= 'z') {
        			alpIdx = c - 'a';
        		}else if ('A' <= c && c <= 'Z'){
        			alpIdx = c - 'A';
        		}
        		if(alpIdx>=0){
        			count[alpIdx]++;
        		} 
        	}
    	}
    	char c = 'a';
    	int i = 0;
    	while(i<count.length) {
    		out.print(c++);
    		out.print(" : ");
    		out.println(count[i++]);
    	}
        out.flush();
    }
 
    public static void main(String[] args) throws IOException {
    	new Main().exec();
    }
}