import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.HashMap;
import java.util.Map;

class Main {
	public static void main(String[] args) throws IOException {
 
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        StringBuffer sb = new StringBuffer();
 
        Map<Character, Integer> map = new HashMap<Character, Integer>();
        char[] mojiList = "abcdefghijklmnopqrstuvwxyz".toCharArray();
        
        for(char key : mojiList) {
           map.put(key, 0);
        }
        
        String input;
        
        while((input = br.readLine()) != null) {
            char[] strList = input.toLowerCase().toCharArray();
            for(char moji : strList) {
                if(map.containsKey(moji)) {
                    map.put(moji, map.get(moji) + 1);
                }
            }
        }
 
        for(char moji : mojiList) {
            System.out.println(moji + " : " + map.get(moji));
        }
    }
} import java.io.BufferedReader; BufferedReader java.io import java.io.IOException; IOException java.io import java.io.InputStreamReader; InputStreamReader java.io import java.util.HashMap; HashMap java.util import java.util.Map; Map java.util class Main {
	public static void main(String[] args) throws IOException {
 
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        StringBuffer sb = new StringBuffer();
 
        Map<Character, Integer> map = new HashMap<Character, Integer>();
        char[] mojiList = "abcdefghijklmnopqrstuvwxyz".toCharArray();
        
        for(char key : mojiList) {
           map.put(key, 0);
        }
        
        String input;
        
        while((input = br.readLine()) != null) {
            char[] strList = input.toLowerCase().toCharArray();
            for(char moji : strList) {
                if(map.containsKey(moji)) {
                    map.put(moji, map.get(moji) + 1);
                }
            }
        }
 
        for(char moji : mojiList) {
            System.out.println(moji + " : " + map.get(moji));
        }
    }
} Main public static void main(String[] args) throws IOException {
 
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        StringBuffer sb = new StringBuffer();
 
        Map<Character, Integer> map = new HashMap<Character, Integer>();
        char[] mojiList = "abcdefghijklmnopqrstuvwxyz".toCharArray();
        
        for(char key : mojiList) {
           map.put(key, 0);
        }
        
        String input;
        
        while((input = br.readLine()) != null) {
            char[] strList = input.toLowerCase().toCharArray();
            for(char moji : strList) {
                if(map.containsKey(moji)) {
                    map.put(moji, map.get(moji) + 1);
                }
            }
        }
 
        for(char moji : mojiList) {
            System.out.println(moji + " : " + map.get(moji));
        }
    } main {
 
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        StringBuffer sb = new StringBuffer();
 
        Map<Character, Integer> map = new HashMap<Character, Integer>();
        char[] mojiList = "abcdefghijklmnopqrstuvwxyz".toCharArray();
        
        for(char key : mojiList) {
           map.put(key, 0);
        }
        
        String input;
        
        while((input = br.readLine()) != null) {
            char[] strList = input.toLowerCase().toCharArray();
            for(char moji : strList) {
                if(map.containsKey(moji)) {
                    map.put(moji, map.get(moji) + 1);
                }
            }
        }
 
        for(char moji : mojiList) {
            System.out.println(moji + " : " + map.get(moji));
        }
    } BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); br new BufferedReader(new InputStreamReader(System.in)) StringBuffer sb = new StringBuffer(); sb new StringBuffer() Map<Character, Integer> map = new HashMap<Character, Integer>(); map new HashMap<Character, Integer>() char[] mojiList = "abcdefghijklmnopqrstuvwxyz".toCharArray(); mojiList "abcdefghijklmnopqrstuvwxyz".toCharArray() "abcdefghijklmnopqrstuvwxyz".toCharArray "abcdefghijklmnopqrstuvwxyz" for(char key : mojiList) {
           map.put(key, 0);
        } char key mojiList {
           map.put(key, 0);
        } {
           map.put(key, 0);
        } map.put(key, 0) map.put map key 0 String input; input while((input = br.readLine()) != null) {
            char[] strList = input.toLowerCase().toCharArray();
            for(char moji : strList) {
                if(map.containsKey(moji)) {
                    map.put(moji, map.get(moji) + 1);
                }
            }
        } (input = br.readLine()) != null (input = br.readLine()) input br.readLine() br.readLine br null {
            char[] strList = input.toLowerCase().toCharArray();
            for(char moji : strList) {
                if(map.containsKey(moji)) {
                    map.put(moji, map.get(moji) + 1);
                }
            }
        } char[] strList = input.toLowerCase().toCharArray(); strList input.toLowerCase().toCharArray() input.toLowerCase().toCharArray input.toLowerCase() input.toLowerCase input for(char moji : strList) {
                if(map.containsKey(moji)) {
                    map.put(moji, map.get(moji) + 1);
                }
            } char moji strList {
                if(map.containsKey(moji)) {
                    map.put(moji, map.get(moji) + 1);
                }
            } {
                if(map.containsKey(moji)) {
                    map.put(moji, map.get(moji) + 1);
                }
            } if(map.containsKey(moji)) {
                    map.put(moji, map.get(moji) + 1);
                } map.containsKey(moji) map.containsKey map moji {
                    map.put(moji, map.get(moji) + 1);
                } map.put(moji, map.get(moji) + 1) map.put map moji map.get(moji) + 1 map.get(moji) map.get map moji 1 for(char moji : mojiList) {
            System.out.println(moji + " : " + map.get(moji));
        } char moji mojiList {
            System.out.println(moji + " : " + map.get(moji));
        } {
            System.out.println(moji + " : " + map.get(moji));
        } System.out.println(moji + " : " + map.get(moji)) System.out.println System.out System System.out moji + " : " + map.get(moji) moji + " : " + map.get(moji) moji " : " map.get(moji) map.get map moji String[] args args
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.HashMap;
import java.util.Map;

class Main {
	public static void main(String[] args) throws IOException {
 
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        StringBuffer sb = new StringBuffer();
 
        Map<Character, Integer> map = new HashMap<Character, Integer>();
        char[] mojiList = "abcdefghijklmnopqrstuvwxyz".toCharArray();
        
        for(char key : mojiList) {
           map.put(key, 0);
        }
        
        String input;
        
        while((input = br.readLine()) != null) {
            char[] strList = input.toLowerCase().toCharArray();
            for(char moji : strList) {
                if(map.containsKey(moji)) {
                    map.put(moji, map.get(moji) + 1);
                }
            }
        }
 
        for(char moji : mojiList) {
            System.out.println(moji + " : " + map.get(moji));
        }
    }
}