[90m    ┌                                        ┐[39m 
   [90m  [39m[32m ╷ ┌─┬─┐ ╷                              [39m[90m [39m 
   [90m  [39m[32m ├─┤ │ ├─┤                              [39m[90m [39m 
   [90m  [39m[32m ╵ └─┴─┘ ╵                              [39m[90m [39m 
[90m    └                                        ┘[39m 
[90m    0[39m[90m                  10[39m[90m                   20[39m