11b
 +-----------------+
8| r r r m r   r r |
7| r c     d d c   |
6| D h   E     h D |
5| R R e C   H   C |
4|     M   H r     |
3|             R R |
2|     R     R     |
1| R       R       |
 +-----------------+
   a b c d e f g h