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