import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in); 

		int[] alpha = new int['z' - 'a' + 1];
		
		StringBuffer line;
		for (; sc.hasNextLine();) {
			line = new StringBuffer(sc.nextLine());
			for (int i = 0; i < line.length(); i++) {
				char ch = line.charAt(i);
				if (ch >= 'a' && ch <= 'z') {
					alpha[ch - 'a']++;
				} else if (ch >= 'A' && ch <= 'Z') {
					alpha[ch - 'A']++;
				}
			}
		}
		
		for (int i = 0; i < 'z' - 'a' + 1; i++) {
			StringBuffer result = new StringBuffer();
			result.append((char)(i + 'a'));
			result.append(" : ");
			result.append(alpha[i]);
			System.out.println(result);
		}
		
		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[] alpha = new int['z' - 'a' + 1];
		
		StringBuffer line;
		for (; sc.hasNextLine();) {
			line = new StringBuffer(sc.nextLine());
			for (int i = 0; i < line.length(); i++) {
				char ch = line.charAt(i);
				if (ch >= 'a' && ch <= 'z') {
					alpha[ch - 'a']++;
				} else if (ch >= 'A' && ch <= 'Z') {
					alpha[ch - 'A']++;
				}
			}
		}
		
		for (int i = 0; i < 'z' - 'a' + 1; i++) {
			StringBuffer result = new StringBuffer();
			result.append((char)(i + 'a'));
			result.append(" : ");
			result.append(alpha[i]);
			System.out.println(result);
		}
		
		sc.close();
	}
} Main public static void main(String[] args) {
		Scanner sc = new Scanner(System.in); 

		int[] alpha = new int['z' - 'a' + 1];
		
		StringBuffer line;
		for (; sc.hasNextLine();) {
			line = new StringBuffer(sc.nextLine());
			for (int i = 0; i < line.length(); i++) {
				char ch = line.charAt(i);
				if (ch >= 'a' && ch <= 'z') {
					alpha[ch - 'a']++;
				} else if (ch >= 'A' && ch <= 'Z') {
					alpha[ch - 'A']++;
				}
			}
		}
		
		for (int i = 0; i < 'z' - 'a' + 1; i++) {
			StringBuffer result = new StringBuffer();
			result.append((char)(i + 'a'));
			result.append(" : ");
			result.append(alpha[i]);
			System.out.println(result);
		}
		
		sc.close();
	} main {
		Scanner sc = new Scanner(System.in); 

		int[] alpha = new int['z' - 'a' + 1];
		
		StringBuffer line;
		for (; sc.hasNextLine();) {
			line = new StringBuffer(sc.nextLine());
			for (int i = 0; i < line.length(); i++) {
				char ch = line.charAt(i);
				if (ch >= 'a' && ch <= 'z') {
					alpha[ch - 'a']++;
				} else if (ch >= 'A' && ch <= 'Z') {
					alpha[ch - 'A']++;
				}
			}
		}
		
		for (int i = 0; i < 'z' - 'a' + 1; i++) {
			StringBuffer result = new StringBuffer();
			result.append((char)(i + 'a'));
			result.append(" : ");
			result.append(alpha[i]);
			System.out.println(result);
		}
		
		sc.close();
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int[] alpha = new int['z' - 'a' + 1]; alpha new int['z' - 'a' + 1] 'z' - 'a' + 1 'z' - 'a' 'z' 'a' 1 StringBuffer line; line for (; sc.hasNextLine();) {
			line = new StringBuffer(sc.nextLine());
			for (int i = 0; i < line.length(); i++) {
				char ch = line.charAt(i);
				if (ch >= 'a' && ch <= 'z') {
					alpha[ch - 'a']++;
				} else if (ch >= 'A' && ch <= 'Z') {
					alpha[ch - 'A']++;
				}
			}
		} ; sc.hasNextLine() sc.hasNextLine sc {
			line = new StringBuffer(sc.nextLine());
			for (int i = 0; i < line.length(); i++) {
				char ch = line.charAt(i);
				if (ch >= 'a' && ch <= 'z') {
					alpha[ch - 'a']++;
				} else if (ch >= 'A' && ch <= 'Z') {
					alpha[ch - 'A']++;
				}
			}
		} {
			line = new StringBuffer(sc.nextLine());
			for (int i = 0; i < line.length(); i++) {
				char ch = line.charAt(i);
				if (ch >= 'a' && ch <= 'z') {
					alpha[ch - 'a']++;
				} else if (ch >= 'A' && ch <= 'Z') {
					alpha[ch - 'A']++;
				}
			}
		} line = new StringBuffer(sc.nextLine()) line new StringBuffer(sc.nextLine()) for (int i = 0; i < line.length(); i++) {
				char ch = line.charAt(i);
				if (ch >= 'a' && ch <= 'z') {
					alpha[ch - 'a']++;
				} else if (ch >= 'A' && ch <= 'Z') {
					alpha[ch - 'A']++;
				}
			} int i = 0; int i = 0; i 0 i < line.length() i line.length() line.length line i++ i++ i {
				char ch = line.charAt(i);
				if (ch >= 'a' && ch <= 'z') {
					alpha[ch - 'a']++;
				} else if (ch >= 'A' && ch <= 'Z') {
					alpha[ch - 'A']++;
				}
			} {
				char ch = line.charAt(i);
				if (ch >= 'a' && ch <= 'z') {
					alpha[ch - 'a']++;
				} else if (ch >= 'A' && ch <= 'Z') {
					alpha[ch - 'A']++;
				}
			} char ch = line.charAt(i); ch line.charAt(i) line.charAt line i if (ch >= 'a' && ch <= 'z') {
					alpha[ch - 'a']++;
				} else if (ch >= 'A' && ch <= 'Z') {
					alpha[ch - 'A']++;
				} ch >= 'a' && ch <= 'z' ch >= 'a' ch 'a' ch <= 'z' ch 'z' {
					alpha[ch - 'a']++;
				} alpha[ch - 'a']++ alpha[ch - 'a'] alpha ch - 'a' ch 'a' if (ch >= 'A' && ch <= 'Z') {
					alpha[ch - 'A']++;
				} ch >= 'A' && ch <= 'Z' ch >= 'A' ch 'A' ch <= 'Z' ch 'Z' {
					alpha[ch - 'A']++;
				} alpha[ch - 'A']++ alpha[ch - 'A'] alpha ch - 'A' ch 'A' for (int i = 0; i < 'z' - 'a' + 1; i++) {
			StringBuffer result = new StringBuffer();
			result.append((char)(i + 'a'));
			result.append(" : ");
			result.append(alpha[i]);
			System.out.println(result);
		} int i = 0; int i = 0; i 0 i < 'z' - 'a' + 1 i 'z' - 'a' + 1 'z' - 'a' 'z' 'a' 1 i++ i++ i {
			StringBuffer result = new StringBuffer();
			result.append((char)(i + 'a'));
			result.append(" : ");
			result.append(alpha[i]);
			System.out.println(result);
		} {
			StringBuffer result = new StringBuffer();
			result.append((char)(i + 'a'));
			result.append(" : ");
			result.append(alpha[i]);
			System.out.println(result);
		} StringBuffer result = new StringBuffer(); result new StringBuffer() result.append((char)(i + 'a')) result.append result (char)(i + 'a') i 'a' result.append(" : ") result.append result " : " result.append(alpha[i]) result.append result alpha[i] alpha i System.out.println(result) System.out.println System.out System System.out result sc.close() sc.close sc String[] args args public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in); 

		int[] alpha = new int['z' - 'a' + 1];
		
		StringBuffer line;
		for (; sc.hasNextLine();) {
			line = new StringBuffer(sc.nextLine());
			for (int i = 0; i < line.length(); i++) {
				char ch = line.charAt(i);
				if (ch >= 'a' && ch <= 'z') {
					alpha[ch - 'a']++;
				} else if (ch >= 'A' && ch <= 'Z') {
					alpha[ch - 'A']++;
				}
			}
		}
		
		for (int i = 0; i < 'z' - 'a' + 1; i++) {
			StringBuffer result = new StringBuffer();
			result.append((char)(i + 'a'));
			result.append(" : ");
			result.append(alpha[i]);
			System.out.println(result);
		}
		
		sc.close();
	}
} public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in); 

		int[] alpha = new int['z' - 'a' + 1];
		
		StringBuffer line;
		for (; sc.hasNextLine();) {
			line = new StringBuffer(sc.nextLine());
			for (int i = 0; i < line.length(); i++) {
				char ch = line.charAt(i);
				if (ch >= 'a' && ch <= 'z') {
					alpha[ch - 'a']++;
				} else if (ch >= 'A' && ch <= 'Z') {
					alpha[ch - 'A']++;
				}
			}
		}
		
		for (int i = 0; i < 'z' - 'a' + 1; i++) {
			StringBuffer result = new StringBuffer();
			result.append((char)(i + 'a'));
			result.append(" : ");
			result.append(alpha[i]);
			System.out.println(result);
		}
		
		sc.close();
	}
} Main
import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in); 

		int[] alpha = new int['z' - 'a' + 1];
		
		StringBuffer line;
		for (; sc.hasNextLine();) {
			line = new StringBuffer(sc.nextLine());
			for (int i = 0; i < line.length(); i++) {
				char ch = line.charAt(i);
				if (ch >= 'a' && ch <= 'z') {
					alpha[ch - 'a']++;
				} else if (ch >= 'A' && ch <= 'Z') {
					alpha[ch - 'A']++;
				}
			}
		}
		
		for (int i = 0; i < 'z' - 'a' + 1; i++) {
			StringBuffer result = new StringBuffer();
			result.append((char)(i + 'a'));
			result.append(" : ");
			result.append(alpha[i]);
			System.out.println(result);
		}
		
		sc.close();
	}
}