|                                 +-----------------22-----------------+                                                               | 
			
				|                                 :                                    :                                                               | 
			
				|                                 4B                                   4--------12--------+                                            | 
			
				| +-------------19.9--------------+-----------------22-----------------:                  :                                            | 
			
				| :                                                                    :                  :                                            | 
			
				| :                                                                    :                  :                                            | 
			
				| :                                                                    :                  :                                            | 
			
				| :                                                                    :                  :                                            | 
			
				| :                                                                    :                  :                                            | 
			
				| :                                                                    :                  :                                            | 
			
				| :                                                                   26                  :                                            | 
			
				| 24                                                                  24               27.9                                            | 
			
				| :                                                                    :                  :                                            | 
			
				| :                                                                    :                  :                                            | 
			
				| :                                                                    :                  :                                            | 
			
				| :                                                                    :                  :                                            | 
			
				| :                                                                    :                  :                                            | 
			
				| :                                                                    :                  :                                            | 
			
				| :A                                                                   :                  :                                            | 
			
				| +----------------------30-----------+----7.9-----+--------12---------C                  :                                            | 
			
				|                                     4           D4                   +--------12--------+                                            | 
			
				|                                     +----7.9-----+                                                                                   |