49w 
 +-----------------+
8|   r r           |
7|   m D           |
6| r R X     X     |
5| r     E         |
4|   R e d         |
3| H R r R   X h   |
2|     M h C c H R |
1|     C   R R     |
 +-----------------+
   a b c d e f g h
