I'm not sure what kind of an info you can use when putting images to the stage but this would be one way: make txt file with info like this:
Code:
00000100000
00001010000
00010001000
00111111100
01000000010
10000000001
and then load it to the ActionScript file for the tiles for the letter "A". Then split the text to the array from linebrakes and use 2d arrays to load and position images to the stage related to the info in that map. Just let the number 1 represent the black color and 0 the empty background.