30 8  
2 \| | | |   |/       \   |   |  
0   +-------+           +-+---+  
1  \ | | |   /         \  |   |  
5   /\       |     |  
7            +-----+  
3  | | +-+   | ____|__    +---+  
4  +-+       |     |  
6            |     |  
