import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		// TODO 自動生成されたメソッド・スタブ
		Scanner sc = new Scanner(System.in);
		String lines = "";
		
		while(sc.hasNext()){
		    String line = sc.nextLine();
		    
		    lines += line;
		}
		
		lines = lines.toLowerCase().replace(" ","");
		char []array_str = lines.toCharArray();
		
		for (char lit = 'a'; lit <= 'z'; lit++){
		    int count = 0;
		    
		    for (char c: array_str){
		        if (lit == c){
		            count++;
		        }
		    }
		    
		    System.out.println(lit+" : "+count);
		} 
	}
} import java.util.Scanner; Scanner java.util public class Main {

	public static void main(String[] args) {
		// TODO 自動生成されたメソッド・スタブ
		Scanner sc = new Scanner(System.in);
		String lines = "";
		
		while(sc.hasNext()){
		    String line = sc.nextLine();
		    
		    lines += line;
		}
		
		lines = lines.toLowerCase().replace(" ","");
		char []array_str = lines.toCharArray();
		
		for (char lit = 'a'; lit <= 'z'; lit++){
		    int count = 0;
		    
		    for (char c: array_str){
		        if (lit == c){
		            count++;
		        }
		    }
		    
		    System.out.println(lit+" : "+count);
		} 
	}
} Main public static void main(String[] args) {
		// TODO 自動生成されたメソッド・スタブ
		Scanner sc = new Scanner(System.in);
		String lines = "";
		
		while(sc.hasNext()){
		    String line = sc.nextLine();
		    
		    lines += line;
		}
		
		lines = lines.toLowerCase().replace(" ","");
		char []array_str = lines.toCharArray();
		
		for (char lit = 'a'; lit <= 'z'; lit++){
		    int count = 0;
		    
		    for (char c: array_str){
		        if (lit == c){
		            count++;
		        }
		    }
		    
		    System.out.println(lit+" : "+count);
		} 
	} main {
		// TODO 自動生成されたメソッド・スタブ
		Scanner sc = new Scanner(System.in);
		String lines = "";
		
		while(sc.hasNext()){
		    String line = sc.nextLine();
		    
		    lines += line;
		}
		
		lines = lines.toLowerCase().replace(" ","");
		char []array_str = lines.toCharArray();
		
		for (char lit = 'a'; lit <= 'z'; lit++){
		    int count = 0;
		    
		    for (char c: array_str){
		        if (lit == c){
		            count++;
		        }
		    }
		    
		    System.out.println(lit+" : "+count);
		} 
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String lines = ""; lines "" while(sc.hasNext()){
		    String line = sc.nextLine();
		    
		    lines += line;
		} sc.hasNext() sc.hasNext sc {
		    String line = sc.nextLine();
		    
		    lines += line;
		} String line = sc.nextLine(); line sc.nextLine() sc.nextLine sc lines += line lines line lines = lines.toLowerCase().replace(" ","") lines lines.toLowerCase().replace(" ","") lines.toLowerCase().replace lines.toLowerCase() lines.toLowerCase lines " " "" char []array_str = lines.toCharArray(); array_str lines.toCharArray() lines.toCharArray lines for (char lit = 'a'; lit <= 'z'; lit++){
		    int count = 0;
		    
		    for (char c: array_str){
		        if (lit == c){
		            count++;
		        }
		    }
		    
		    System.out.println(lit+" : "+count);
		} char lit = 'a'; char lit = 'a'; lit 'a' lit <= 'z' lit 'z' lit++ lit++ lit {
		    int count = 0;
		    
		    for (char c: array_str){
		        if (lit == c){
		            count++;
		        }
		    }
		    
		    System.out.println(lit+" : "+count);
		} {
		    int count = 0;
		    
		    for (char c: array_str){
		        if (lit == c){
		            count++;
		        }
		    }
		    
		    System.out.println(lit+" : "+count);
		} int count = 0; count 0 for (char c: array_str){
		        if (lit == c){
		            count++;
		        }
		    } char c array_str {
		        if (lit == c){
		            count++;
		        }
		    } {
		        if (lit == c){
		            count++;
		        }
		    } if (lit == c){
		            count++;
		        } lit == c lit c {
		            count++;
		        } count++ count System.out.println(lit+" : "+count) System.out.println System.out System System.out lit+" : "+count lit+" : "+count lit " : " count String[] args args public class Main {

	public static void main(String[] args) {
		// TODO 自動生成されたメソッド・スタブ
		Scanner sc = new Scanner(System.in);
		String lines = "";
		
		while(sc.hasNext()){
		    String line = sc.nextLine();
		    
		    lines += line;
		}
		
		lines = lines.toLowerCase().replace(" ","");
		char []array_str = lines.toCharArray();
		
		for (char lit = 'a'; lit <= 'z'; lit++){
		    int count = 0;
		    
		    for (char c: array_str){
		        if (lit == c){
		            count++;
		        }
		    }
		    
		    System.out.println(lit+" : "+count);
		} 
	}
} public class Main {

	public static void main(String[] args) {
		// TODO 自動生成されたメソッド・スタブ
		Scanner sc = new Scanner(System.in);
		String lines = "";
		
		while(sc.hasNext()){
		    String line = sc.nextLine();
		    
		    lines += line;
		}
		
		lines = lines.toLowerCase().replace(" ","");
		char []array_str = lines.toCharArray();
		
		for (char lit = 'a'; lit <= 'z'; lit++){
		    int count = 0;
		    
		    for (char c: array_str){
		        if (lit == c){
		            count++;
		        }
		    }
		    
		    System.out.println(lit+" : "+count);
		} 
	}
} Main
import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		// TODO 自動生成されたメソッド・スタブ
		Scanner sc = new Scanner(System.in);
		String lines = "";
		
		while(sc.hasNext()){
		    String line = sc.nextLine();
		    
		    lines += line;
		}
		
		lines = lines.toLowerCase().replace(" ","");
		char []array_str = lines.toCharArray();
		
		for (char lit = 'a'; lit <= 'z'; lit++){
		    int count = 0;
		    
		    for (char c: array_str){
		        if (lit == c){
		            count++;
		        }
		    }
		    
		    System.out.println(lit+" : "+count);
		} 
	}
}
