import java.util.Scanner;
public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int data[] = new int[26];
        String test = "abcdefghijklmnopqrstuvwxyz";
        String str,str2;
        int j,i;

        while(sc.hasNext()) {
            str = sc.nextLine();
            str2=str.toLowerCase();

            for(i=0;i<str2.length();i++){
            	for(j=0;j<26;j++) {
            		if(test.charAt(j)==str2.charAt(i)) {
            			data[j]++;
            		}
            	}
            }
            
        }
        for(i=0;i<26;i++){
        	System.out.println(test.charAt(i)+" : "+data[i]);
        }
        sc.close();
    }
}
 import java.util.Scanner; Scanner java.util public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int data[] = new int[26];
        String test = "abcdefghijklmnopqrstuvwxyz";
        String str,str2;
        int j,i;

        while(sc.hasNext()) {
            str = sc.nextLine();
            str2=str.toLowerCase();

            for(i=0;i<str2.length();i++){
            	for(j=0;j<26;j++) {
            		if(test.charAt(j)==str2.charAt(i)) {
            			data[j]++;
            		}
            	}
            }
            
        }
        for(i=0;i<26;i++){
        	System.out.println(test.charAt(i)+" : "+data[i]);
        }
        sc.close();
    }
} Main public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int data[] = new int[26];
        String test = "abcdefghijklmnopqrstuvwxyz";
        String str,str2;
        int j,i;

        while(sc.hasNext()) {
            str = sc.nextLine();
            str2=str.toLowerCase();

            for(i=0;i<str2.length();i++){
            	for(j=0;j<26;j++) {
            		if(test.charAt(j)==str2.charAt(i)) {
            			data[j]++;
            		}
            	}
            }
            
        }
        for(i=0;i<26;i++){
        	System.out.println(test.charAt(i)+" : "+data[i]);
        }
        sc.close();
    } main {
        Scanner sc = new Scanner(System.in);
        int data[] = new int[26];
        String test = "abcdefghijklmnopqrstuvwxyz";
        String str,str2;
        int j,i;

        while(sc.hasNext()) {
            str = sc.nextLine();
            str2=str.toLowerCase();

            for(i=0;i<str2.length();i++){
            	for(j=0;j<26;j++) {
            		if(test.charAt(j)==str2.charAt(i)) {
            			data[j]++;
            		}
            	}
            }
            
        }
        for(i=0;i<26;i++){
        	System.out.println(test.charAt(i)+" : "+data[i]);
        }
        sc.close();
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int data[] = new int[26]; data new int[26] 26 String test = "abcdefghijklmnopqrstuvwxyz"; test "abcdefghijklmnopqrstuvwxyz" String str str str2; str2 int j j i; i while(sc.hasNext()) {
            str = sc.nextLine();
            str2=str.toLowerCase();

            for(i=0;i<str2.length();i++){
            	for(j=0;j<26;j++) {
            		if(test.charAt(j)==str2.charAt(i)) {
            			data[j]++;
            		}
            	}
            }
            
        } sc.hasNext() sc.hasNext sc {
            str = sc.nextLine();
            str2=str.toLowerCase();

            for(i=0;i<str2.length();i++){
            	for(j=0;j<26;j++) {
            		if(test.charAt(j)==str2.charAt(i)) {
            			data[j]++;
            		}
            	}
            }
            
        } str = sc.nextLine() str sc.nextLine() sc.nextLine sc str2=str.toLowerCase() str2 str.toLowerCase() str.toLowerCase str for(i=0;i<str2.length();i++){
            	for(j=0;j<26;j++) {
            		if(test.charAt(j)==str2.charAt(i)) {
            			data[j]++;
            		}
            	}
            } i=0; i=0 i 0 i<str2.length() i str2.length() str2.length str2 i++ i++ i {
            	for(j=0;j<26;j++) {
            		if(test.charAt(j)==str2.charAt(i)) {
            			data[j]++;
            		}
            	}
            } {
            	for(j=0;j<26;j++) {
            		if(test.charAt(j)==str2.charAt(i)) {
            			data[j]++;
            		}
            	}
            } for(j=0;j<26;j++) {
            		if(test.charAt(j)==str2.charAt(i)) {
            			data[j]++;
            		}
            	} j=0; j=0 j 0 j<26 j 26 j++ j++ j {
            		if(test.charAt(j)==str2.charAt(i)) {
            			data[j]++;
            		}
            	} {
            		if(test.charAt(j)==str2.charAt(i)) {
            			data[j]++;
            		}
            	} if(test.charAt(j)==str2.charAt(i)) {
            			data[j]++;
            		} test.charAt(j)==str2.charAt(i) test.charAt(j) test.charAt test j str2.charAt(i) str2.charAt str2 i {
            			data[j]++;
            		} data[j]++ data[j] data j for(i=0;i<26;i++){
        	System.out.println(test.charAt(i)+" : "+data[i]);
        } i=0; i=0 i 0 i<26 i 26 i++ i++ i {
        	System.out.println(test.charAt(i)+" : "+data[i]);
        } {
        	System.out.println(test.charAt(i)+" : "+data[i]);
        } System.out.println(test.charAt(i)+" : "+data[i]) System.out.println System.out System System.out test.charAt(i)+" : "+data[i] test.charAt(i)+" : "+data[i] test.charAt(i) test.charAt test i " : " data[i] data i sc.close() sc.close sc String[] args args public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int data[] = new int[26];
        String test = "abcdefghijklmnopqrstuvwxyz";
        String str,str2;
        int j,i;

        while(sc.hasNext()) {
            str = sc.nextLine();
            str2=str.toLowerCase();

            for(i=0;i<str2.length();i++){
            	for(j=0;j<26;j++) {
            		if(test.charAt(j)==str2.charAt(i)) {
            			data[j]++;
            		}
            	}
            }
            
        }
        for(i=0;i<26;i++){
        	System.out.println(test.charAt(i)+" : "+data[i]);
        }
        sc.close();
    }
} public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int data[] = new int[26];
        String test = "abcdefghijklmnopqrstuvwxyz";
        String str,str2;
        int j,i;

        while(sc.hasNext()) {
            str = sc.nextLine();
            str2=str.toLowerCase();

            for(i=0;i<str2.length();i++){
            	for(j=0;j<26;j++) {
            		if(test.charAt(j)==str2.charAt(i)) {
            			data[j]++;
            		}
            	}
            }
            
        }
        for(i=0;i<26;i++){
        	System.out.println(test.charAt(i)+" : "+data[i]);
        }
        sc.close();
    }
} Main
import java.util.Scanner;
public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int data[] = new int[26];
        String test = "abcdefghijklmnopqrstuvwxyz";
        String str,str2;
        int j,i;

        while(sc.hasNext()) {
            str = sc.nextLine();
            str2=str.toLowerCase();

            for(i=0;i<str2.length();i++){
            	for(j=0;j<26;j++) {
            		if(test.charAt(j)==str2.charAt(i)) {
            			data[j]++;
            		}
            	}
            }
            
        }
        for(i=0;i<26;i++){
        	System.out.println(test.charAt(i)+" : "+data[i]);
        }
        sc.close();
    }
}

