|   U   |   |   
|   X   |   |   
|   |   R   |   
|   @---X   |   
|   |   R   |   
|   @---X   |   
|   |   R   |   
|   Rz  |   |   
|   X   |   |   
H   |   |   |   
|   |   R   |   
|   @---X   |   
|   |   R   |   
|   @---X   |   
|   |   R   |   
|   Rz  |   |   
@---X   |   |   
|   |   R   |   
|   @---X   |   
|   |   R   |   
|   @---X   |   
|   |   R   |   
|   Rz  |   |   
@---X   |   |   
|   |   R   |   
@---+---X   |   
|   |   R   |   
@---+---X   |   
|   |   R   |   
Rz  |   |   |   
R   |   |   |   
X---@   |   |   
R   |   |   |   
|   Rz  |   |   
|   X   |   |   
|   |   |   R   
|   @---+---X   
|   |   |   R   
|   @---+---X   
|   |   |   R   
|   Rz  |   |   
|   X   |   |   
|   |   |   R   
|   @---+---X   
|   |   |   R   
|   @---+---X   
|   |   |   R   
|   Rz  |   |   
