import java.util.Scanner;

class Main {
    public static void main(String[] args) {
        int[] count = new int[26];
        char c;
        String str;
        for (int i = 0; i < 26; i++) 
            count[i] = 0;
        Scanner sc = new Scanner(System.in);

        while (sc.hasNext()) {
            str = sc.next();
            for(int i = 0; i < str.length(); i++) {
                c = str.charAt(i);
                if (c >= 'A' && c <= 'z') {
                    if (c >= 'a' && c <= 'z') {
                        count[c - 'a']++;
                    } else {
                        count[c - 'A']++;
                    }
                }
            }
        }
        for (int i = 0; i < 26; i++) 
            System.out.println((char)(i + 'a') + " : " + count[i]);
    }
} import java.util.Scanner; Scanner java.util class Main {
    public static void main(String[] args) {
        int[] count = new int[26];
        char c;
        String str;
        for (int i = 0; i < 26; i++) 
            count[i] = 0;
        Scanner sc = new Scanner(System.in);

        while (sc.hasNext()) {
            str = sc.next();
            for(int i = 0; i < str.length(); i++) {
                c = str.charAt(i);
                if (c >= 'A' && c <= 'z') {
                    if (c >= 'a' && c <= 'z') {
                        count[c - 'a']++;
                    } else {
                        count[c - 'A']++;
                    }
                }
            }
        }
        for (int i = 0; i < 26; i++) 
            System.out.println((char)(i + 'a') + " : " + count[i]);
    }
} Main public static void main(String[] args) {
        int[] count = new int[26];
        char c;
        String str;
        for (int i = 0; i < 26; i++) 
            count[i] = 0;
        Scanner sc = new Scanner(System.in);

        while (sc.hasNext()) {
            str = sc.next();
            for(int i = 0; i < str.length(); i++) {
                c = str.charAt(i);
                if (c >= 'A' && c <= 'z') {
                    if (c >= 'a' && c <= 'z') {
                        count[c - 'a']++;
                    } else {
                        count[c - 'A']++;
                    }
                }
            }
        }
        for (int i = 0; i < 26; i++) 
            System.out.println((char)(i + 'a') + " : " + count[i]);
    } main {
        int[] count = new int[26];
        char c;
        String str;
        for (int i = 0; i < 26; i++) 
            count[i] = 0;
        Scanner sc = new Scanner(System.in);

        while (sc.hasNext()) {
            str = sc.next();
            for(int i = 0; i < str.length(); i++) {
                c = str.charAt(i);
                if (c >= 'A' && c <= 'z') {
                    if (c >= 'a' && c <= 'z') {
                        count[c - 'a']++;
                    } else {
                        count[c - 'A']++;
                    }
                }
            }
        }
        for (int i = 0; i < 26; i++) 
            System.out.println((char)(i + 'a') + " : " + count[i]);
    } int[] count = new int[26]; count new int[26] 26 char c; c String str; str for (int i = 0; i < 26; i++) 
            count[i] = 0; int i = 0; int i = 0; i 0 i < 26 i 26 i++ i++ i count[i] = 0; count[i] = 0 count[i] count i 0 Scanner sc = new Scanner(System.in); sc new Scanner(System.in) while (sc.hasNext()) {
            str = sc.next();
            for(int i = 0; i < str.length(); i++) {
                c = str.charAt(i);
                if (c >= 'A' && c <= 'z') {
                    if (c >= 'a' && c <= 'z') {
                        count[c - 'a']++;
                    } else {
                        count[c - 'A']++;
                    }
                }
            }
        } sc.hasNext() sc.hasNext sc {
            str = sc.next();
            for(int i = 0; i < str.length(); i++) {
                c = str.charAt(i);
                if (c >= 'A' && c <= 'z') {
                    if (c >= 'a' && c <= 'z') {
                        count[c - 'a']++;
                    } else {
                        count[c - 'A']++;
                    }
                }
            }
        } str = sc.next() str sc.next() sc.next sc for(int i = 0; i < str.length(); i++) {
                c = str.charAt(i);
                if (c >= 'A' && c <= 'z') {
                    if (c >= 'a' && c <= 'z') {
                        count[c - 'a']++;
                    } else {
                        count[c - 'A']++;
                    }
                }
            } int i = 0; int i = 0; i 0 i < str.length() i str.length() str.length str i++ i++ i {
                c = str.charAt(i);
                if (c >= 'A' && c <= 'z') {
                    if (c >= 'a' && c <= 'z') {
                        count[c - 'a']++;
                    } else {
                        count[c - 'A']++;
                    }
                }
            } {
                c = str.charAt(i);
                if (c >= 'A' && c <= 'z') {
                    if (c >= 'a' && c <= 'z') {
                        count[c - 'a']++;
                    } else {
                        count[c - 'A']++;
                    }
                }
            } c = str.charAt(i) c str.charAt(i) str.charAt str i if (c >= 'A' && c <= 'z') {
                    if (c >= 'a' && c <= 'z') {
                        count[c - 'a']++;
                    } else {
                        count[c - 'A']++;
                    }
                } c >= 'A' && c <= 'z' c >= 'A' c 'A' c <= 'z' c 'z' {
                    if (c >= 'a' && c <= 'z') {
                        count[c - 'a']++;
                    } else {
                        count[c - 'A']++;
                    }
                } if (c >= 'a' && c <= 'z') {
                        count[c - 'a']++;
                    } else {
                        count[c - 'A']++;
                    } c >= 'a' && c <= 'z' c >= 'a' c 'a' c <= 'z' c 'z' {
                        count[c - 'a']++;
                    } count[c - 'a']++ count[c - 'a'] count c - 'a' c 'a' {
                        count[c - 'A']++;
                    } count[c - 'A']++ count[c - 'A'] count c - 'A' c 'A' for (int i = 0; i < 26; i++) 
            System.out.println((char)(i + 'a') + " : " + count[i]); int i = 0; int i = 0; i 0 i < 26 i 26 i++ i++ i System.out.println((char)(i + 'a') + " : " + count[i]); System.out.println((char)(i + 'a') + " : " + count[i]) System.out.println System.out System System.out (char)(i + 'a') + " : " + count[i] (char)(i + 'a') + " : " + count[i] (char)(i + 'a') i 'a' " : " count[i] count i String[] args args
import java.util.Scanner;

class Main {
    public static void main(String[] args) {
        int[] count = new int[26];
        char c;
        String str;
        for (int i = 0; i < 26; i++) 
            count[i] = 0;
        Scanner sc = new Scanner(System.in);

        while (sc.hasNext()) {
            str = sc.next();
            for(int i = 0; i < str.length(); i++) {
                c = str.charAt(i);
                if (c >= 'A' && c <= 'z') {
                    if (c >= 'a' && c <= 'z') {
                        count[c - 'a']++;
                    } else {
                        count[c - 'A']++;
                    }
                }
            }
        }
        for (int i = 0; i < 26; i++) 
            System.out.println((char)(i + 'a') + " : " + count[i]);
    }
}
