#include <bits/stdc++.h>
using namespace std;
char s[1100];
int main()
{
    scanf("%s", s);
     
    int len = strlen(s); 
    //1
    printf("1:%d\n", len);
    //2
    printf("2:%c\n", s[0]);
    //3
    printf("3:%c\n", s[len-1]);
    //4
    printf("4:");
    for(int i=0; i <= len-1; i++) printf("%c ", s[i]);
    printf("\n");
    //5
    printf("5:");
    for(int i=len-1; i >=0; i--) printf("%c ", s[i]);
    printf("\n");
    //6
    printf("6:%s\n", s);
    //7
    printf("7:");
    for(int i=0; i <= len-2; i++) printf("%d ", s[i]);
    printf("%d\n", s[len-1]);
    //8
    printf("8:");
    for(int i=0; i <= len-1; i++)
    {
        if( ('a' <= s[i]) && (s[i] <= 'z') ) //小写字母 
        {
            printf("%c", s[i] - (97-65));
        }
        else if( ('A' <= s[i]) && (s[i] <= 'Z') ) //大写字母 
        {
            printf("%c", s[i] + (97-65));
        }
        else printf("%c", s[i]);
    }
    printf("\n");
     
    //9
    bool bk = true;
    for(int i=0; i <= len/2; i++)
    {
        if( s[i] != s[(len-1)-i])
        {
            bk = false;
            break;
        }
    }
    if( bk == true ) printf("9:YES\n"); else printf("9:NO\n");
     
    return 0;
}