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