PROBLEM B - LETTER HISTOGRAM
----------------------------

For each sentence, you must draw a histogram of letter frequencies
using text graphics.

INPUT FORMAT
------------

The input file will contain multiple instances.  Each instance is a
line of text.  The line will contain upper-case letters, spaces and
punctuation (commas, periods, exclamation points, question marks,
colons and semicolons).

The end of the input file will be indicated by a line consisting of a
single word, "END".  (Do not generate any output for that final line.)

OUTPUT FORMAT
-------------

For each input instance, you should generate a histogram as shown in
the sample below.  The number of stars in each column is equal to the
number of occurrences of the letter that labels that column.  Ignore
the punctuation.  

Separate the histograms for different instances by a single blank line.

SAMPLE INPUT
------------
THE QUICK BROWN FOX JUMPED OVER THE LAZY DOG.
DID THE COW JUMP OVER THE MOON, NARROWLY MISSING THE METEOR?
I CAME; I SAW; I CONQUERED!
END

SAMPLE OUTPUT
-------------
    *         *           
    *         *           
   **  *      *  * **     
****************** *******
ABCDEFGHIJKLMNOPQRSTUVWXYZ

    *         *           
    *         *           
    *       * *  * *      
    *  **   ***  * *      
   **  **   ***  ***  *   
* *** **** ***** ****** * 
ABCDEFGHIJKLMNOPQRSTUVWXYZ

    *   *                 
* * *   *                 
* ***   *   *** *** * *   
ABCDEFGHIJKLMNOPQRSTUVWXYZ