|                                       +----------15-----------+----------15.9-----------+                                            | 
			
				|                                       :                       :F                        :                                            | 
			
				|                                       :                       :                         :                                            | 
			
				|                                       :                       :                         :                                            | 
			
				|                                      13                     13.9                     13.9                                            | 
			
				|                                       :                       :                         :                                            | 
			
				|                                       :                       :                         :                                            | 
			
				|                                       :                       :                         :                                            | 
			
				|                      21          36   :                       :                         :                                            | 
			
				|      +D-------------------------------------------------------+----------15.9-----------+                                            | 
			
				|      :                                                        :                                                                      | 
			
				|      :                                                        :                                                                      | 
			
				|      :                                                        :                                                                      | 
			
				|      :                                                        :                                                                      | 
			
				|      :                                                        :                                                                      | 
			
				|      :                                                        :                                                                      | 
			
				| --4--+                                                        :                                                                      | 
			
				|    27.9                                                     27.9                                                                     | 
			
				|      :                                                        :                                                                      | 
			
				|      :                                                        :                                                                      | 
			
				|      :                                                        :                                                                      | 
			
				|      :                                                        :                                                                      | 
			
				|      :                                                        :                                                                      | 
			
				|      :                                                        :                                                                      | 
			
				| 26  26                                                        :                                                                      | 
			
				|      :A                                                       :                                                                      | 
			
				|      :---------------------------36---------------------------+                                                                      | 
			
				|      :B                                                       :                                                                      | 
			
				|      :                                                        :                                                                      | 
			
				|     10                                                       10                                                                      | 
			
				|      :                                                        :                                                                      | 
			
				|     C:                                                        :                                                                      | 
			
				| --4--+---------------------------36---------------------------+                                                                      |