import java.util.Scanner;
public class Main{
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int[] cou = new int[26];

        while(sc.hasNext()){
            String str = sc.next();
            char[] ch =str.toCharArray();
            int le = str.length();
            for(int i=0;i<le;i++){
                for(int k=0;k<26;k++){
                    if(ch[i]==(65+k) || ch[i]==97+k){
                        cou[k]++;
                    }
                }
            }

        }

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

        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[] cou = new int[26];

        while(sc.hasNext()){
            String str = sc.next();
            char[] ch =str.toCharArray();
            int le = str.length();
            for(int i=0;i<le;i++){
                for(int k=0;k<26;k++){
                    if(ch[i]==(65+k) || ch[i]==97+k){
                        cou[k]++;
                    }
                }
            }

        }

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

        sc.close();
    }
} Main public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int[] cou = new int[26];

        while(sc.hasNext()){
            String str = sc.next();
            char[] ch =str.toCharArray();
            int le = str.length();
            for(int i=0;i<le;i++){
                for(int k=0;k<26;k++){
                    if(ch[i]==(65+k) || ch[i]==97+k){
                        cou[k]++;
                    }
                }
            }

        }

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

        sc.close();
    } main {
        Scanner sc = new Scanner(System.in);
        int[] cou = new int[26];

        while(sc.hasNext()){
            String str = sc.next();
            char[] ch =str.toCharArray();
            int le = str.length();
            for(int i=0;i<le;i++){
                for(int k=0;k<26;k++){
                    if(ch[i]==(65+k) || ch[i]==97+k){
                        cou[k]++;
                    }
                }
            }

        }

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

        sc.close();
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int[] cou = new int[26]; cou new int[26] 26 while(sc.hasNext()){
            String str = sc.next();
            char[] ch =str.toCharArray();
            int le = str.length();
            for(int i=0;i<le;i++){
                for(int k=0;k<26;k++){
                    if(ch[i]==(65+k) || ch[i]==97+k){
                        cou[k]++;
                    }
                }
            }

        } sc.hasNext() sc.hasNext sc {
            String str = sc.next();
            char[] ch =str.toCharArray();
            int le = str.length();
            for(int i=0;i<le;i++){
                for(int k=0;k<26;k++){
                    if(ch[i]==(65+k) || ch[i]==97+k){
                        cou[k]++;
                    }
                }
            }

        } String str = sc.next(); str sc.next() sc.next sc char[] ch =str.toCharArray(); ch str.toCharArray() str.toCharArray str int le = str.length(); le str.length() str.length str for(int i=0;i<le;i++){
                for(int k=0;k<26;k++){
                    if(ch[i]==(65+k) || ch[i]==97+k){
                        cou[k]++;
                    }
                }
            } int i=0; int i=0; i 0 i<le i le i++ i++ i {
                for(int k=0;k<26;k++){
                    if(ch[i]==(65+k) || ch[i]==97+k){
                        cou[k]++;
                    }
                }
            } {
                for(int k=0;k<26;k++){
                    if(ch[i]==(65+k) || ch[i]==97+k){
                        cou[k]++;
                    }
                }
            } for(int k=0;k<26;k++){
                    if(ch[i]==(65+k) || ch[i]==97+k){
                        cou[k]++;
                    }
                } int k=0; int k=0; k 0 k<26 k 26 k++ k++ k {
                    if(ch[i]==(65+k) || ch[i]==97+k){
                        cou[k]++;
                    }
                } {
                    if(ch[i]==(65+k) || ch[i]==97+k){
                        cou[k]++;
                    }
                } if(ch[i]==(65+k) || ch[i]==97+k){
                        cou[k]++;
                    } ch[i]==(65+k) || ch[i]==97+k ch[i]==(65+k) ch[i] ch i (65+k) 65 k ch[i]==97+k ch[i] ch i 97+k 97 k {
                        cou[k]++;
                    } cou[k]++ cou[k] cou k for(int i=0;i<26;i++){
            int c = 97+i;
            System.out.println((char)c+" : "+cou[i]);
        } int i=0; int i=0; i 0 i<26 i 26 i++ i++ i {
            int c = 97+i;
            System.out.println((char)c+" : "+cou[i]);
        } {
            int c = 97+i;
            System.out.println((char)c+" : "+cou[i]);
        } int c = 97+i; c 97+i 97 i System.out.println((char)c+" : "+cou[i]) System.out.println System.out System System.out (char)c+" : "+cou[i] (char)c+" : "+cou[i] (char)c " : " cou[i] cou i sc.close() sc.close sc String[] args args public class Main{
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int[] cou = new int[26];

        while(sc.hasNext()){
            String str = sc.next();
            char[] ch =str.toCharArray();
            int le = str.length();
            for(int i=0;i<le;i++){
                for(int k=0;k<26;k++){
                    if(ch[i]==(65+k) || ch[i]==97+k){
                        cou[k]++;
                    }
                }
            }

        }

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

        sc.close();
    }
} public class Main{
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int[] cou = new int[26];

        while(sc.hasNext()){
            String str = sc.next();
            char[] ch =str.toCharArray();
            int le = str.length();
            for(int i=0;i<le;i++){
                for(int k=0;k<26;k++){
                    if(ch[i]==(65+k) || ch[i]==97+k){
                        cou[k]++;
                    }
                }
            }

        }

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

        sc.close();
    }
} Main
import java.util.Scanner;
public class Main{
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int[] cou = new int[26];

        while(sc.hasNext()){
            String str = sc.next();
            char[] ch =str.toCharArray();
            int le = str.length();
            for(int i=0;i<le;i++){
                for(int k=0;k<26;k++){
                    if(ch[i]==(65+k) || ch[i]==97+k){
                        cou[k]++;
                    }
                }
            }

        }

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

        sc.close();
    }
}

