   
import java.util.Scanner;

public class Main{
    public static void main(String[] args){
	final int ALPHA_NUM=26;
	Scanner in = new Scanner(System.in);
	int[] cnt = new int[ALPHA_NUM];
	
	for(int i=0;i<ALPHA_NUM;i++)cnt[i]=0;
	    
	while(in.hasNext()){
	    String str = in.next();
	    for(int i=0;i<str.length();i++){
		char ch= str.charAt(i);

		if(('a'<= ch && ch<='z')|| ('A'<= ch && ch<='Z')){
		    if(Character.isUpperCase(ch))cnt[ch-(int)'A']++;
		    else if(Character.isLowerCase(ch))cnt[ch-(int)'a']++;
		}
	    }
	}
	    for(int i=0;i<ALPHA_NUM;i++)System.out.println((char)((int)'a'+i)+" : "+cnt[i]);
	
    }
}
 import java.util.Scanner; Scanner java.util public class Main{
    public static void main(String[] args){
	final int ALPHA_NUM=26;
	Scanner in = new Scanner(System.in);
	int[] cnt = new int[ALPHA_NUM];
	
	for(int i=0;i<ALPHA_NUM;i++)cnt[i]=0;
	    
	while(in.hasNext()){
	    String str = in.next();
	    for(int i=0;i<str.length();i++){
		char ch= str.charAt(i);

		if(('a'<= ch && ch<='z')|| ('A'<= ch && ch<='Z')){
		    if(Character.isUpperCase(ch))cnt[ch-(int)'A']++;
		    else if(Character.isLowerCase(ch))cnt[ch-(int)'a']++;
		}
	    }
	}
	    for(int i=0;i<ALPHA_NUM;i++)System.out.println((char)((int)'a'+i)+" : "+cnt[i]);
	
    }
} Main public static void main(String[] args){
	final int ALPHA_NUM=26;
	Scanner in = new Scanner(System.in);
	int[] cnt = new int[ALPHA_NUM];
	
	for(int i=0;i<ALPHA_NUM;i++)cnt[i]=0;
	    
	while(in.hasNext()){
	    String str = in.next();
	    for(int i=0;i<str.length();i++){
		char ch= str.charAt(i);

		if(('a'<= ch && ch<='z')|| ('A'<= ch && ch<='Z')){
		    if(Character.isUpperCase(ch))cnt[ch-(int)'A']++;
		    else if(Character.isLowerCase(ch))cnt[ch-(int)'a']++;
		}
	    }
	}
	    for(int i=0;i<ALPHA_NUM;i++)System.out.println((char)((int)'a'+i)+" : "+cnt[i]);
	
    } main {
	final int ALPHA_NUM=26;
	Scanner in = new Scanner(System.in);
	int[] cnt = new int[ALPHA_NUM];
	
	for(int i=0;i<ALPHA_NUM;i++)cnt[i]=0;
	    
	while(in.hasNext()){
	    String str = in.next();
	    for(int i=0;i<str.length();i++){
		char ch= str.charAt(i);

		if(('a'<= ch && ch<='z')|| ('A'<= ch && ch<='Z')){
		    if(Character.isUpperCase(ch))cnt[ch-(int)'A']++;
		    else if(Character.isLowerCase(ch))cnt[ch-(int)'a']++;
		}
	    }
	}
	    for(int i=0;i<ALPHA_NUM;i++)System.out.println((char)((int)'a'+i)+" : "+cnt[i]);
	
    } final int ALPHA_NUM=26; ALPHA_NUM 26 Scanner in = new Scanner(System.in); in new Scanner(System.in) int[] cnt = new int[ALPHA_NUM]; cnt new int[ALPHA_NUM] ALPHA_NUM for(int i=0;i<ALPHA_NUM;i++)cnt[i]=0; int i=0; int i=0; i 0 i<ALPHA_NUM i ALPHA_NUM i++ i++ i cnt[i]=0; cnt[i]=0 cnt[i] cnt i 0 while(in.hasNext()){
	    String str = in.next();
	    for(int i=0;i<str.length();i++){
		char ch= str.charAt(i);

		if(('a'<= ch && ch<='z')|| ('A'<= ch && ch<='Z')){
		    if(Character.isUpperCase(ch))cnt[ch-(int)'A']++;
		    else if(Character.isLowerCase(ch))cnt[ch-(int)'a']++;
		}
	    }
	} in.hasNext() in.hasNext in {
	    String str = in.next();
	    for(int i=0;i<str.length();i++){
		char ch= str.charAt(i);

		if(('a'<= ch && ch<='z')|| ('A'<= ch && ch<='Z')){
		    if(Character.isUpperCase(ch))cnt[ch-(int)'A']++;
		    else if(Character.isLowerCase(ch))cnt[ch-(int)'a']++;
		}
	    }
	} String str = in.next(); str in.next() in.next in for(int i=0;i<str.length();i++){
		char ch= str.charAt(i);

		if(('a'<= ch && ch<='z')|| ('A'<= ch && ch<='Z')){
		    if(Character.isUpperCase(ch))cnt[ch-(int)'A']++;
		    else if(Character.isLowerCase(ch))cnt[ch-(int)'a']++;
		}
	    } int i=0; int i=0; i 0 i<str.length() i str.length() str.length str i++ i++ i {
		char ch= str.charAt(i);

		if(('a'<= ch && ch<='z')|| ('A'<= ch && ch<='Z')){
		    if(Character.isUpperCase(ch))cnt[ch-(int)'A']++;
		    else if(Character.isLowerCase(ch))cnt[ch-(int)'a']++;
		}
	    } {
		char ch= str.charAt(i);

		if(('a'<= ch && ch<='z')|| ('A'<= ch && ch<='Z')){
		    if(Character.isUpperCase(ch))cnt[ch-(int)'A']++;
		    else if(Character.isLowerCase(ch))cnt[ch-(int)'a']++;
		}
	    } char ch= str.charAt(i); ch str.charAt(i) str.charAt str i if(('a'<= ch && ch<='z')|| ('A'<= ch && ch<='Z')){
		    if(Character.isUpperCase(ch))cnt[ch-(int)'A']++;
		    else if(Character.isLowerCase(ch))cnt[ch-(int)'a']++;
		} ('a'<= ch && ch<='z')|| ('A'<= ch && ch<='Z') ('a'<= ch && ch<='z') 'a'<= ch 'a' ch ch<='z' ch 'z' ('A'<= ch && ch<='Z') 'A'<= ch 'A' ch ch<='Z' ch 'Z' {
		    if(Character.isUpperCase(ch))cnt[ch-(int)'A']++;
		    else if(Character.isLowerCase(ch))cnt[ch-(int)'a']++;
		} if(Character.isUpperCase(ch))cnt[ch-(int)'A']++;
		    else if(Character.isLowerCase(ch))cnt[ch-(int)'a']++; Character.isUpperCase(ch) Character.isUpperCase Character ch cnt[ch-(int)'A']++ cnt[ch-(int)'A'] cnt ch-(int)'A' ch (int)'A' if(Character.isLowerCase(ch))cnt[ch-(int)'a']++; Character.isLowerCase(ch) Character.isLowerCase Character ch cnt[ch-(int)'a']++ cnt[ch-(int)'a'] cnt ch-(int)'a' ch (int)'a' for(int i=0;i<ALPHA_NUM;i++)System.out.println((char)((int)'a'+i)+" : "+cnt[i]); int i=0; int i=0; i 0 i<ALPHA_NUM i ALPHA_NUM i++ i++ i System.out.println((char)((int)'a'+i)+" : "+cnt[i]); System.out.println((char)((int)'a'+i)+" : "+cnt[i]) System.out.println System.out System System.out (char)((int)'a'+i)+" : "+cnt[i] (char)((int)'a'+i)+" : "+cnt[i] (char)((int)'a'+i) (int)'a' i " : " cnt[i] cnt i String[] args args public class Main{
    public static void main(String[] args){
	final int ALPHA_NUM=26;
	Scanner in = new Scanner(System.in);
	int[] cnt = new int[ALPHA_NUM];
	
	for(int i=0;i<ALPHA_NUM;i++)cnt[i]=0;
	    
	while(in.hasNext()){
	    String str = in.next();
	    for(int i=0;i<str.length();i++){
		char ch= str.charAt(i);

		if(('a'<= ch && ch<='z')|| ('A'<= ch && ch<='Z')){
		    if(Character.isUpperCase(ch))cnt[ch-(int)'A']++;
		    else if(Character.isLowerCase(ch))cnt[ch-(int)'a']++;
		}
	    }
	}
	    for(int i=0;i<ALPHA_NUM;i++)System.out.println((char)((int)'a'+i)+" : "+cnt[i]);
	
    }
} public class Main{
    public static void main(String[] args){
	final int ALPHA_NUM=26;
	Scanner in = new Scanner(System.in);
	int[] cnt = new int[ALPHA_NUM];
	
	for(int i=0;i<ALPHA_NUM;i++)cnt[i]=0;
	    
	while(in.hasNext()){
	    String str = in.next();
	    for(int i=0;i<str.length();i++){
		char ch= str.charAt(i);

		if(('a'<= ch && ch<='z')|| ('A'<= ch && ch<='Z')){
		    if(Character.isUpperCase(ch))cnt[ch-(int)'A']++;
		    else if(Character.isLowerCase(ch))cnt[ch-(int)'a']++;
		}
	    }
	}
	    for(int i=0;i<ALPHA_NUM;i++)System.out.println((char)((int)'a'+i)+" : "+cnt[i]);
	
    }
} Main
   
import java.util.Scanner;

public class Main{
    public static void main(String[] args){
	final int ALPHA_NUM=26;
	Scanner in = new Scanner(System.in);
	int[] cnt = new int[ALPHA_NUM];
	
	for(int i=0;i<ALPHA_NUM;i++)cnt[i]=0;
	    
	while(in.hasNext()){
	    String str = in.next();
	    for(int i=0;i<str.length();i++){
		char ch= str.charAt(i);

		if(('a'<= ch && ch<='z')|| ('A'<= ch && ch<='Z')){
		    if(Character.isUpperCase(ch))cnt[ch-(int)'A']++;
		    else if(Character.isLowerCase(ch))cnt[ch-(int)'a']++;
		}
	    }
	}
	    for(int i=0;i<ALPHA_NUM;i++)System.out.println((char)((int)'a'+i)+" : "+cnt[i]);
	
    }
}

