import java.util.Scanner;
import java.util.ArrayList;

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

        int[] counter = new int[26];
        for (int i = 0; i < 26; i++) {
            counter[i] = 0;
        }

        while (sc.hasNext()) {
            s.add(sc.nextLine().toLowerCase());
        }

        for (int j = 0; j < s.size(); j++) {
            for (int i = 0; i < s.get(j).length(); i++) {
                char c = s.get(j).charAt(i);
                if (c >= 97 && c <= 122) {
                    counter[c - 97]++;
                }
            }
        }

        for (int i = 0; i < 26; i++) {
            System.out.println((char) (i + 97) + " : " + counter[i]);
        }
        sc.close();
    }
} import java.util.Scanner; Scanner java.util import java.util.ArrayList; ArrayList java.util public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        ArrayList<String> s = new ArrayList<String>();

        int[] counter = new int[26];
        for (int i = 0; i < 26; i++) {
            counter[i] = 0;
        }

        while (sc.hasNext()) {
            s.add(sc.nextLine().toLowerCase());
        }

        for (int j = 0; j < s.size(); j++) {
            for (int i = 0; i < s.get(j).length(); i++) {
                char c = s.get(j).charAt(i);
                if (c >= 97 && c <= 122) {
                    counter[c - 97]++;
                }
            }
        }

        for (int i = 0; i < 26; i++) {
            System.out.println((char) (i + 97) + " : " + counter[i]);
        }
        sc.close();
    }
} Main public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        ArrayList<String> s = new ArrayList<String>();

        int[] counter = new int[26];
        for (int i = 0; i < 26; i++) {
            counter[i] = 0;
        }

        while (sc.hasNext()) {
            s.add(sc.nextLine().toLowerCase());
        }

        for (int j = 0; j < s.size(); j++) {
            for (int i = 0; i < s.get(j).length(); i++) {
                char c = s.get(j).charAt(i);
                if (c >= 97 && c <= 122) {
                    counter[c - 97]++;
                }
            }
        }

        for (int i = 0; i < 26; i++) {
            System.out.println((char) (i + 97) + " : " + counter[i]);
        }
        sc.close();
    } main {
        Scanner sc = new Scanner(System.in);
        ArrayList<String> s = new ArrayList<String>();

        int[] counter = new int[26];
        for (int i = 0; i < 26; i++) {
            counter[i] = 0;
        }

        while (sc.hasNext()) {
            s.add(sc.nextLine().toLowerCase());
        }

        for (int j = 0; j < s.size(); j++) {
            for (int i = 0; i < s.get(j).length(); i++) {
                char c = s.get(j).charAt(i);
                if (c >= 97 && c <= 122) {
                    counter[c - 97]++;
                }
            }
        }

        for (int i = 0; i < 26; i++) {
            System.out.println((char) (i + 97) + " : " + counter[i]);
        }
        sc.close();
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) ArrayList<String> s = new ArrayList<String>(); s new ArrayList<String>() int[] counter = new int[26]; counter new int[26] 26 for (int i = 0; i < 26; i++) {
            counter[i] = 0;
        } int i = 0; int i = 0; i 0 i < 26 i 26 i++ i++ i {
            counter[i] = 0;
        } {
            counter[i] = 0;
        } counter[i] = 0 counter[i] counter i 0 while (sc.hasNext()) {
            s.add(sc.nextLine().toLowerCase());
        } sc.hasNext() sc.hasNext sc {
            s.add(sc.nextLine().toLowerCase());
        } s.add(sc.nextLine().toLowerCase()) s.add s sc.nextLine().toLowerCase() sc.nextLine().toLowerCase sc.nextLine() sc.nextLine sc for (int j = 0; j < s.size(); j++) {
            for (int i = 0; i < s.get(j).length(); i++) {
                char c = s.get(j).charAt(i);
                if (c >= 97 && c <= 122) {
                    counter[c - 97]++;
                }
            }
        } int j = 0; int j = 0; j 0 j < s.size() j s.size() s.size s j++ j++ j {
            for (int i = 0; i < s.get(j).length(); i++) {
                char c = s.get(j).charAt(i);
                if (c >= 97 && c <= 122) {
                    counter[c - 97]++;
                }
            }
        } {
            for (int i = 0; i < s.get(j).length(); i++) {
                char c = s.get(j).charAt(i);
                if (c >= 97 && c <= 122) {
                    counter[c - 97]++;
                }
            }
        } for (int i = 0; i < s.get(j).length(); i++) {
                char c = s.get(j).charAt(i);
                if (c >= 97 && c <= 122) {
                    counter[c - 97]++;
                }
            } int i = 0; int i = 0; i 0 i < s.get(j).length() i s.get(j).length() s.get(j).length s.get(j) s.get s j i++ i++ i {
                char c = s.get(j).charAt(i);
                if (c >= 97 && c <= 122) {
                    counter[c - 97]++;
                }
            } {
                char c = s.get(j).charAt(i);
                if (c >= 97 && c <= 122) {
                    counter[c - 97]++;
                }
            } char c = s.get(j).charAt(i); c s.get(j).charAt(i) s.get(j).charAt s.get(j) s.get s j i if (c >= 97 && c <= 122) {
                    counter[c - 97]++;
                } c >= 97 && c <= 122 c >= 97 c 97 c <= 122 c 122 {
                    counter[c - 97]++;
                } counter[c - 97]++ counter[c - 97] counter c - 97 c 97 for (int i = 0; i < 26; i++) {
            System.out.println((char) (i + 97) + " : " + counter[i]);
        } int i = 0; int i = 0; i 0 i < 26 i 26 i++ i++ i {
            System.out.println((char) (i + 97) + " : " + counter[i]);
        } {
            System.out.println((char) (i + 97) + " : " + counter[i]);
        } System.out.println((char) (i + 97) + " : " + counter[i]) System.out.println System.out System System.out (char) (i + 97) + " : " + counter[i] (char) (i + 97) + " : " + counter[i] (char) (i + 97) i 97 " : " counter[i] counter i sc.close() sc.close sc String[] args args public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        ArrayList<String> s = new ArrayList<String>();

        int[] counter = new int[26];
        for (int i = 0; i < 26; i++) {
            counter[i] = 0;
        }

        while (sc.hasNext()) {
            s.add(sc.nextLine().toLowerCase());
        }

        for (int j = 0; j < s.size(); j++) {
            for (int i = 0; i < s.get(j).length(); i++) {
                char c = s.get(j).charAt(i);
                if (c >= 97 && c <= 122) {
                    counter[c - 97]++;
                }
            }
        }

        for (int i = 0; i < 26; i++) {
            System.out.println((char) (i + 97) + " : " + counter[i]);
        }
        sc.close();
    }
} public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        ArrayList<String> s = new ArrayList<String>();

        int[] counter = new int[26];
        for (int i = 0; i < 26; i++) {
            counter[i] = 0;
        }

        while (sc.hasNext()) {
            s.add(sc.nextLine().toLowerCase());
        }

        for (int j = 0; j < s.size(); j++) {
            for (int i = 0; i < s.get(j).length(); i++) {
                char c = s.get(j).charAt(i);
                if (c >= 97 && c <= 122) {
                    counter[c - 97]++;
                }
            }
        }

        for (int i = 0; i < 26; i++) {
            System.out.println((char) (i + 97) + " : " + counter[i]);
        }
        sc.close();
    }
} Main
import java.util.Scanner;
import java.util.ArrayList;

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

        int[] counter = new int[26];
        for (int i = 0; i < 26; i++) {
            counter[i] = 0;
        }

        while (sc.hasNext()) {
            s.add(sc.nextLine().toLowerCase());
        }

        for (int j = 0; j < s.size(); j++) {
            for (int i = 0; i < s.get(j).length(); i++) {
                char c = s.get(j).charAt(i);
                if (c >= 97 && c <= 122) {
                    counter[c - 97]++;
                }
            }
        }

        for (int i = 0; i < 26; i++) {
            System.out.println((char) (i + 97) + " : " + counter[i]);
        }
        sc.close();
    }
}
