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

public class Main {
	public static void main(String[] age)throws IOException{
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		StringBuffer sb = new StringBuffer();

		int number[] = new int[26];
		String AlHA = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
		String alha = "abcdefghijklmnopqrstuvwxyz";
		int i = 0;
		int j = 0;
		String input;
		String a;

		while(( input = br.readLine())!=null ){
			for( i=0 ; i<input.length() ; i++ ){
				for( j=0 ; j<26 ; j++ ){
					a = input.substring(i, i+1);
					if( a.equals(AlHA.substring(j, j+1)) || a.equals(alha.substring(j, j+1))){
						number[j]++;
					}
				}
			}
		}

		for( i=0 ; i<26 ; i++ ){
			sb.append(alha.substring(i, i+1)).append(" : ").append(Integer.toString(number[i])).append("\n");
		}
		System.out.print(sb);
	}
} 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[] age)throws IOException{
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		StringBuffer sb = new StringBuffer();

		int number[] = new int[26];
		String AlHA = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
		String alha = "abcdefghijklmnopqrstuvwxyz";
		int i = 0;
		int j = 0;
		String input;
		String a;

		while(( input = br.readLine())!=null ){
			for( i=0 ; i<input.length() ; i++ ){
				for( j=0 ; j<26 ; j++ ){
					a = input.substring(i, i+1);
					if( a.equals(AlHA.substring(j, j+1)) || a.equals(alha.substring(j, j+1))){
						number[j]++;
					}
				}
			}
		}

		for( i=0 ; i<26 ; i++ ){
			sb.append(alha.substring(i, i+1)).append(" : ").append(Integer.toString(number[i])).append("\n");
		}
		System.out.print(sb);
	}
} Main public static void main(String[] age)throws IOException{
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		StringBuffer sb = new StringBuffer();

		int number[] = new int[26];
		String AlHA = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
		String alha = "abcdefghijklmnopqrstuvwxyz";
		int i = 0;
		int j = 0;
		String input;
		String a;

		while(( input = br.readLine())!=null ){
			for( i=0 ; i<input.length() ; i++ ){
				for( j=0 ; j<26 ; j++ ){
					a = input.substring(i, i+1);
					if( a.equals(AlHA.substring(j, j+1)) || a.equals(alha.substring(j, j+1))){
						number[j]++;
					}
				}
			}
		}

		for( i=0 ; i<26 ; i++ ){
			sb.append(alha.substring(i, i+1)).append(" : ").append(Integer.toString(number[i])).append("\n");
		}
		System.out.print(sb);
	} main {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		StringBuffer sb = new StringBuffer();

		int number[] = new int[26];
		String AlHA = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
		String alha = "abcdefghijklmnopqrstuvwxyz";
		int i = 0;
		int j = 0;
		String input;
		String a;

		while(( input = br.readLine())!=null ){
			for( i=0 ; i<input.length() ; i++ ){
				for( j=0 ; j<26 ; j++ ){
					a = input.substring(i, i+1);
					if( a.equals(AlHA.substring(j, j+1)) || a.equals(alha.substring(j, j+1))){
						number[j]++;
					}
				}
			}
		}

		for( i=0 ; i<26 ; i++ ){
			sb.append(alha.substring(i, i+1)).append(" : ").append(Integer.toString(number[i])).append("\n");
		}
		System.out.print(sb);
	} BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); br new BufferedReader(new InputStreamReader(System.in)) StringBuffer sb = new StringBuffer(); sb new StringBuffer() int number[] = new int[26]; number new int[26] 26 String AlHA = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"; AlHA "ABCDEFGHIJKLMNOPQRSTUVWXYZ" String alha = "abcdefghijklmnopqrstuvwxyz"; alha "abcdefghijklmnopqrstuvwxyz" int i = 0; i 0 int j = 0; j 0 String input; input String a; a while(( input = br.readLine())!=null ){
			for( i=0 ; i<input.length() ; i++ ){
				for( j=0 ; j<26 ; j++ ){
					a = input.substring(i, i+1);
					if( a.equals(AlHA.substring(j, j+1)) || a.equals(alha.substring(j, j+1))){
						number[j]++;
					}
				}
			}
		} ( input = br.readLine())!=null ( input = br.readLine()) input br.readLine() br.readLine br null {
			for( i=0 ; i<input.length() ; i++ ){
				for( j=0 ; j<26 ; j++ ){
					a = input.substring(i, i+1);
					if( a.equals(AlHA.substring(j, j+1)) || a.equals(alha.substring(j, j+1))){
						number[j]++;
					}
				}
			}
		} for( i=0 ; i<input.length() ; i++ ){
				for( j=0 ; j<26 ; j++ ){
					a = input.substring(i, i+1);
					if( a.equals(AlHA.substring(j, j+1)) || a.equals(alha.substring(j, j+1))){
						number[j]++;
					}
				}
			} i=0 ; i=0 i 0 i<input.length() i input.length() input.length input i++ i++ i {
				for( j=0 ; j<26 ; j++ ){
					a = input.substring(i, i+1);
					if( a.equals(AlHA.substring(j, j+1)) || a.equals(alha.substring(j, j+1))){
						number[j]++;
					}
				}
			} {
				for( j=0 ; j<26 ; j++ ){
					a = input.substring(i, i+1);
					if( a.equals(AlHA.substring(j, j+1)) || a.equals(alha.substring(j, j+1))){
						number[j]++;
					}
				}
			} for( j=0 ; j<26 ; j++ ){
					a = input.substring(i, i+1);
					if( a.equals(AlHA.substring(j, j+1)) || a.equals(alha.substring(j, j+1))){
						number[j]++;
					}
				} j=0 ; j=0 j 0 j<26 j 26 j++ j++ j {
					a = input.substring(i, i+1);
					if( a.equals(AlHA.substring(j, j+1)) || a.equals(alha.substring(j, j+1))){
						number[j]++;
					}
				} {
					a = input.substring(i, i+1);
					if( a.equals(AlHA.substring(j, j+1)) || a.equals(alha.substring(j, j+1))){
						number[j]++;
					}
				} a = input.substring(i, i+1) a input.substring(i, i+1) input.substring input i i+1 i 1 if( a.equals(AlHA.substring(j, j+1)) || a.equals(alha.substring(j, j+1))){
						number[j]++;
					} a.equals(AlHA.substring(j, j+1)) || a.equals(alha.substring(j, j+1)) a.equals(AlHA.substring(j, j+1)) a.equals a AlHA.substring(j, j+1) AlHA.substring AlHA j j+1 j 1 a.equals(alha.substring(j, j+1)) a.equals a alha.substring(j, j+1) alha.substring alha j j+1 j 1 {
						number[j]++;
					} number[j]++ number[j] number j for( i=0 ; i<26 ; i++ ){
			sb.append(alha.substring(i, i+1)).append(" : ").append(Integer.toString(number[i])).append("\n");
		} i=0 ; i=0 i 0 i<26 i 26 i++ i++ i {
			sb.append(alha.substring(i, i+1)).append(" : ").append(Integer.toString(number[i])).append("\n");
		} {
			sb.append(alha.substring(i, i+1)).append(" : ").append(Integer.toString(number[i])).append("\n");
		} sb.append(alha.substring(i, i+1)).append(" : ").append(Integer.toString(number[i])).append("\n") sb.append(alha.substring(i, i+1)).append(" : ").append(Integer.toString(number[i])).append sb.append(alha.substring(i, i+1)).append(" : ").append(Integer.toString(number[i])) sb.append(alha.substring(i, i+1)).append(" : ").append sb.append(alha.substring(i, i+1)).append(" : ") sb.append(alha.substring(i, i+1)).append sb.append(alha.substring(i, i+1)) sb.append sb alha.substring(i, i+1) alha.substring alha i i+1 i 1 " : " Integer.toString(number[i]) Integer.toString Integer number[i] number i "\n" System.out.print(sb) System.out.print System.out System System.out sb String[] age age public class Main {
	public static void main(String[] age)throws IOException{
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		StringBuffer sb = new StringBuffer();

		int number[] = new int[26];
		String AlHA = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
		String alha = "abcdefghijklmnopqrstuvwxyz";
		int i = 0;
		int j = 0;
		String input;
		String a;

		while(( input = br.readLine())!=null ){
			for( i=0 ; i<input.length() ; i++ ){
				for( j=0 ; j<26 ; j++ ){
					a = input.substring(i, i+1);
					if( a.equals(AlHA.substring(j, j+1)) || a.equals(alha.substring(j, j+1))){
						number[j]++;
					}
				}
			}
		}

		for( i=0 ; i<26 ; i++ ){
			sb.append(alha.substring(i, i+1)).append(" : ").append(Integer.toString(number[i])).append("\n");
		}
		System.out.print(sb);
	}
} public class Main {
	public static void main(String[] age)throws IOException{
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		StringBuffer sb = new StringBuffer();

		int number[] = new int[26];
		String AlHA = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
		String alha = "abcdefghijklmnopqrstuvwxyz";
		int i = 0;
		int j = 0;
		String input;
		String a;

		while(( input = br.readLine())!=null ){
			for( i=0 ; i<input.length() ; i++ ){
				for( j=0 ; j<26 ; j++ ){
					a = input.substring(i, i+1);
					if( a.equals(AlHA.substring(j, j+1)) || a.equals(alha.substring(j, j+1))){
						number[j]++;
					}
				}
			}
		}

		for( i=0 ; i<26 ; i++ ){
			sb.append(alha.substring(i, i+1)).append(" : ").append(Integer.toString(number[i])).append("\n");
		}
		System.out.print(sb);
	}
} Main
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Main {
	public static void main(String[] age)throws IOException{
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		StringBuffer sb = new StringBuffer();

		int number[] = new int[26];
		String AlHA = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
		String alha = "abcdefghijklmnopqrstuvwxyz";
		int i = 0;
		int j = 0;
		String input;
		String a;

		while(( input = br.readLine())!=null ){
			for( i=0 ; i<input.length() ; i++ ){
				for( j=0 ; j<26 ; j++ ){
					a = input.substring(i, i+1);
					if( a.equals(AlHA.substring(j, j+1)) || a.equals(alha.substring(j, j+1))){
						number[j]++;
					}
				}
			}
		}

		for( i=0 ; i<26 ; i++ ){
			sb.append(alha.substring(i, i+1)).append(" : ").append(Integer.toString(number[i])).append("\n");
		}
		System.out.print(sb);
	}
}