|                           27.9                                  15.9                                                                 | 
			
				|      +----------------------------------------------+--------------------------+                                                     | 
			
				|      :                                              :                          :                                                     | 
			
				|      :                                              :                          :                                                     | 
			
				|     10                                             10                         10                                                     | 
			
				|      :                                              :                          :                                                     | 
			
				|      :                                              :                          :                                                     | 
			
				|      :----------15.9------27.9--+        12        C:           15.9          D:                                                     | 
			
				|      +----------------------------------------------+--------------------------+                                                     | 
			
				|      :                          :                                              4                                                     | 
			
				|      :                          :                                              +-2-+                                                 | 
			
				|      :                          :                                              :F  :                                                 | 
			
				|      :                          :                                              :   :                                                 | 
			
				|      :                          :                                              :   :                                                 | 
			
				|      :                        19.9                                            12  12                                                 | 
			
				|     22                          :                                              :   :                                                 | 
			
				|      :                          :                                              :   :                                                 | 
			
				|      :                          :                                              :   :                                                 | 
			
				|      :                          :                                             22 2 :                                                 | 
			
				|      :                          :                                              +---+                                                 | 
			
				|      :                         B:                                              :                                                     | 
			
				|      :                 +---4.9--+                                              :                                                     | 
			
				|      +-------11--------2        :                                              :                                                     | 
			
				|                                 6                                              :                                                     | 
			
				|                                 :A                                             :                                                     | 
			
				|                                 +----6.9---+----------------21-----------------+                                                     | 
			
				|                                            :H                                 G:                                                     | 
			
				|                                            :                                   :                                                     | 
			
				|                                            :                                   :                                                     | 
			
				|                                            :                                   :                                                     | 
			
				|                                            :                                   :                                                     | 
			
				|                                            :                                   :                                                     | 
			
				|                                            21                                 21                                                     | 
			
				|                                            :                                   :                                                     | 
			
				|                                            :                                   :                                                     | 
			
				|                                            :                                   :                                                     | 
			
				|                                            :                                   :                                                     | 
			
				|                                            :                                   :                                                     | 
			
				|                                            :                                   :                                                     | 
			
				|                                            +----------------21-----------------+                                                     |