44b 
 +-----------------+
8|           d r   |
7|   r m   C r c h |
6| r d X c   X r   |
5| r           R   |
4|   R M E e       |
3|     X     X     |
2| H R D         H |
1|   R   R D     R |
 +-----------------+
   a b c d e f g h
