| +D--------17.9---------+ | 
				| 2---------17.9---------2 | 
				| :                      : | 
				| :                      : | 
				| +-------------24-------------+                      : | 
				| :                           17                      : | 
				| :                            :                      : | 
				| 12                           12                      : | 
				| :                            :                      : | 
				| :                           C:                      : | 
				| ------------24--------------+-------+---------30--24-------------+                      : | 
				| :                                                           : | 
				| :                                                        44.9 | 
				| :                                                           : | 
				| :                                                           : | 
				| :                                                           : | 
				| 24                         24                                                           : | 
				| :                                                           : | 
				| :                                                           : | 
				| :                                                           : | 
				| :                                                           : | 
				| B:                                                           : | 
				| ------------24--------------+                                                           : | 
				| 4                                                          A: | 
				| +---------18.9----------2----11------2--------17.9----------+ |