import java.util.Scanner;

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

		char[] alphabet = "abcdefghijklmnopqrstuvwxyz".toCharArray();
		int[] alphabetNum = new int[26];
		for (int i = 0; i < alphabetNum.length; i++)
		{
			alphabetNum[i] = 0;
		}

		while (sc.hasNext())
		{
			char[] input = sc.next().toLowerCase().toCharArray();

			for (int i = 0; i < input.length; i++)
			{
				for (int j = 0; j < alphabet.length; j++)
				{
					if (input[i] == alphabet[j])
					{
						alphabetNum[j]++;
						break;
					}
				}
			}
		}

		for (int i = 0; i < alphabetNum.length; i++)
		{
			System.out.println(alphabet[i] + " : " + alphabetNum[i]);
		}
	}
}
 import java.util.Scanner; Scanner java.util public class Main
{
	public static void main(String[] args)
	{
		Scanner sc = new Scanner(System.in);

		char[] alphabet = "abcdefghijklmnopqrstuvwxyz".toCharArray();
		int[] alphabetNum = new int[26];
		for (int i = 0; i < alphabetNum.length; i++)
		{
			alphabetNum[i] = 0;
		}

		while (sc.hasNext())
		{
			char[] input = sc.next().toLowerCase().toCharArray();

			for (int i = 0; i < input.length; i++)
			{
				for (int j = 0; j < alphabet.length; j++)
				{
					if (input[i] == alphabet[j])
					{
						alphabetNum[j]++;
						break;
					}
				}
			}
		}

		for (int i = 0; i < alphabetNum.length; i++)
		{
			System.out.println(alphabet[i] + " : " + alphabetNum[i]);
		}
	}
} Main public static void main(String[] args)
	{
		Scanner sc = new Scanner(System.in);

		char[] alphabet = "abcdefghijklmnopqrstuvwxyz".toCharArray();
		int[] alphabetNum = new int[26];
		for (int i = 0; i < alphabetNum.length; i++)
		{
			alphabetNum[i] = 0;
		}

		while (sc.hasNext())
		{
			char[] input = sc.next().toLowerCase().toCharArray();

			for (int i = 0; i < input.length; i++)
			{
				for (int j = 0; j < alphabet.length; j++)
				{
					if (input[i] == alphabet[j])
					{
						alphabetNum[j]++;
						break;
					}
				}
			}
		}

		for (int i = 0; i < alphabetNum.length; i++)
		{
			System.out.println(alphabet[i] + " : " + alphabetNum[i]);
		}
	} main {
		Scanner sc = new Scanner(System.in);

		char[] alphabet = "abcdefghijklmnopqrstuvwxyz".toCharArray();
		int[] alphabetNum = new int[26];
		for (int i = 0; i < alphabetNum.length; i++)
		{
			alphabetNum[i] = 0;
		}

		while (sc.hasNext())
		{
			char[] input = sc.next().toLowerCase().toCharArray();

			for (int i = 0; i < input.length; i++)
			{
				for (int j = 0; j < alphabet.length; j++)
				{
					if (input[i] == alphabet[j])
					{
						alphabetNum[j]++;
						break;
					}
				}
			}
		}

		for (int i = 0; i < alphabetNum.length; i++)
		{
			System.out.println(alphabet[i] + " : " + alphabetNum[i]);
		}
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) char[] alphabet = "abcdefghijklmnopqrstuvwxyz".toCharArray(); alphabet "abcdefghijklmnopqrstuvwxyz".toCharArray() "abcdefghijklmnopqrstuvwxyz".toCharArray "abcdefghijklmnopqrstuvwxyz" int[] alphabetNum = new int[26]; alphabetNum new int[26] 26 for (int i = 0; i < alphabetNum.length; i++)
		{
			alphabetNum[i] = 0;
		} int i = 0; int i = 0; i 0 i < alphabetNum.length i alphabetNum.length alphabetNum alphabetNum.length i++ i++ i {
			alphabetNum[i] = 0;
		} {
			alphabetNum[i] = 0;
		} alphabetNum[i] = 0 alphabetNum[i] alphabetNum i 0 while (sc.hasNext())
		{
			char[] input = sc.next().toLowerCase().toCharArray();

			for (int i = 0; i < input.length; i++)
			{
				for (int j = 0; j < alphabet.length; j++)
				{
					if (input[i] == alphabet[j])
					{
						alphabetNum[j]++;
						break;
					}
				}
			}
		} sc.hasNext() sc.hasNext sc {
			char[] input = sc.next().toLowerCase().toCharArray();

			for (int i = 0; i < input.length; i++)
			{
				for (int j = 0; j < alphabet.length; j++)
				{
					if (input[i] == alphabet[j])
					{
						alphabetNum[j]++;
						break;
					}
				}
			}
		} char[] input = sc.next().toLowerCase().toCharArray(); input sc.next().toLowerCase().toCharArray() sc.next().toLowerCase().toCharArray sc.next().toLowerCase() sc.next().toLowerCase sc.next() sc.next sc for (int i = 0; i < input.length; i++)
			{
				for (int j = 0; j < alphabet.length; j++)
				{
					if (input[i] == alphabet[j])
					{
						alphabetNum[j]++;
						break;
					}
				}
			} int i = 0; int i = 0; i 0 i < input.length i input.length input input.length i++ i++ i {
				for (int j = 0; j < alphabet.length; j++)
				{
					if (input[i] == alphabet[j])
					{
						alphabetNum[j]++;
						break;
					}
				}
			} {
				for (int j = 0; j < alphabet.length; j++)
				{
					if (input[i] == alphabet[j])
					{
						alphabetNum[j]++;
						break;
					}
				}
			} for (int j = 0; j < alphabet.length; j++)
				{
					if (input[i] == alphabet[j])
					{
						alphabetNum[j]++;
						break;
					}
				} int j = 0; int j = 0; j 0 j < alphabet.length j alphabet.length alphabet alphabet.length j++ j++ j {
					if (input[i] == alphabet[j])
					{
						alphabetNum[j]++;
						break;
					}
				} {
					if (input[i] == alphabet[j])
					{
						alphabetNum[j]++;
						break;
					}
				} if (input[i] == alphabet[j])
					{
						alphabetNum[j]++;
						break;
					} input[i] == alphabet[j] input[i] input i alphabet[j] alphabet j {
						alphabetNum[j]++;
						break;
					} alphabetNum[j]++ alphabetNum[j] alphabetNum j break; for (int i = 0; i < alphabetNum.length; i++)
		{
			System.out.println(alphabet[i] + " : " + alphabetNum[i]);
		} int i = 0; int i = 0; i 0 i < alphabetNum.length i alphabetNum.length alphabetNum alphabetNum.length i++ i++ i {
			System.out.println(alphabet[i] + " : " + alphabetNum[i]);
		} {
			System.out.println(alphabet[i] + " : " + alphabetNum[i]);
		} System.out.println(alphabet[i] + " : " + alphabetNum[i]) System.out.println System.out System System.out alphabet[i] + " : " + alphabetNum[i] alphabet[i] + " : " + alphabetNum[i] alphabet[i] alphabet i " : " alphabetNum[i] alphabetNum i String[] args args public class Main
{
	public static void main(String[] args)
	{
		Scanner sc = new Scanner(System.in);

		char[] alphabet = "abcdefghijklmnopqrstuvwxyz".toCharArray();
		int[] alphabetNum = new int[26];
		for (int i = 0; i < alphabetNum.length; i++)
		{
			alphabetNum[i] = 0;
		}

		while (sc.hasNext())
		{
			char[] input = sc.next().toLowerCase().toCharArray();

			for (int i = 0; i < input.length; i++)
			{
				for (int j = 0; j < alphabet.length; j++)
				{
					if (input[i] == alphabet[j])
					{
						alphabetNum[j]++;
						break;
					}
				}
			}
		}

		for (int i = 0; i < alphabetNum.length; i++)
		{
			System.out.println(alphabet[i] + " : " + alphabetNum[i]);
		}
	}
} public class Main
{
	public static void main(String[] args)
	{
		Scanner sc = new Scanner(System.in);

		char[] alphabet = "abcdefghijklmnopqrstuvwxyz".toCharArray();
		int[] alphabetNum = new int[26];
		for (int i = 0; i < alphabetNum.length; i++)
		{
			alphabetNum[i] = 0;
		}

		while (sc.hasNext())
		{
			char[] input = sc.next().toLowerCase().toCharArray();

			for (int i = 0; i < input.length; i++)
			{
				for (int j = 0; j < alphabet.length; j++)
				{
					if (input[i] == alphabet[j])
					{
						alphabetNum[j]++;
						break;
					}
				}
			}
		}

		for (int i = 0; i < alphabetNum.length; i++)
		{
			System.out.println(alphabet[i] + " : " + alphabetNum[i]);
		}
	}
} Main
import java.util.Scanner;

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

		char[] alphabet = "abcdefghijklmnopqrstuvwxyz".toCharArray();
		int[] alphabetNum = new int[26];
		for (int i = 0; i < alphabetNum.length; i++)
		{
			alphabetNum[i] = 0;
		}

		while (sc.hasNext())
		{
			char[] input = sc.next().toLowerCase().toCharArray();

			for (int i = 0; i < input.length; i++)
			{
				for (int j = 0; j < alphabet.length; j++)
				{
					if (input[i] == alphabet[j])
					{
						alphabetNum[j]++;
						break;
					}
				}
			}
		}

		for (int i = 0; i < alphabetNum.length; i++)
		{
			System.out.println(alphabet[i] + " : " + alphabetNum[i]);
		}
	}
}

