___ ++++++++++++++++++
 =================  [___ |                |
 |       |       |%%     |================|
 |       |       %%%%    |                | 
 |       |      %%%%%%   |                |
 |-------+-----%%%%%%%%  |================|
 |       |     %%%%%%%%  |                |
 |       |      %%%%%%   |         c[_]   |
 |       |       %%%%    |================|
 ================={}     |                |
        ____      {}     |                |
       [____] ____{}____ |================|
___           \________/ |                |
___]         __|      |  |                |
            [__|      |  |________________|
---------------l______]--+----------------+-----
nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn
nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn
nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn
nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn