import java.util.*;
import java.io.*;
public class Letter{
public static int count(char x){
if(x>='A' && x<='Z') return x-'A'+1;
else return x-'a'+1;
}
public static void printOut(char aa){
int x;int j;
char tt,yy;
char temp;
if(aa>='A' && aa<='Z') {
temp='A';
x=aa-'A'+1;}
else if(aa>='a' && aa<='z'){
temp='a';
x=aa-'a'+1;}
else {temp='a';x=0;
}
for(int i=1;i<=x;i++){
for(int k=x;k>i;k--) System.out.print(" ");
for(j=1;j<=i;j++) {
tt=(char)(temp+j-1);
System.out.print(tt);
}
tt=(char)(temp+i-1);
for(int m=1;m<=j-2;m++) {
yy=(char)(tt-m);
System.out.print(yy);
}
System.out.println();
}
}
public static void main(String[] args) throws Exception{
System.out.println(" , :");
Scanner reader=new Scanner(System.in);
String xx=reader.next();
char aa=xx.charAt(0);
printOut(aa);
}
}
:
, :
W
A
ABA
ABCBA
ABCDCBA
ABCDEDCBA
ABCDEFEDCBA
ABCDEFGFEDCBA
ABCDEFGHGFEDCBA
ABCDEFGHIHGFEDCBA
ABCDEFGHIJIHGFEDCBA
ABCDEFGHIJKJIHGFEDCBA
ABCDEFGHIJKLKJIHGFEDCBA
ABCDEFGHIJKLMLKJIHGFEDCBA
ABCDEFGHIJKLMNMLKJIHGFEDCBA
ABCDEFGHIJKLMNONMLKJIHGFEDCBA
ABCDEFGHIJKLMNOPONMLKJIHGFEDCBA
ABCDEFGHIJKLMNOPQPONMLKJIHGFEDCBA
ABCDEFGHIJKLMNOPQRQPONMLKJIHGFEDCBA
ABCDEFGHIJKLMNOPQRSRQPONMLKJIHGFEDCBA
ABCDEFGHIJKLMNOPQRSTSRQPONMLKJIHGFEDCBA
ABCDEFGHIJKLMNOPQRSTUTSRQPONMLKJIHGFEDCBA
ABCDEFGHIJKLMNOPQRSTUVUTSRQPONMLKJIHGFEDCBA
ABCDEFGHIJKLMNOPQRSTUVWVUTSRQPONMLKJIHGFEDCBA
F:\help>