id: 244 yr ( 9, (9, 0, 0, 0)) (( 1.9, 1.4 ), ( 5.3, 4.5 ))
 +9    +    +    +    +   +7 
|                        
|                     2010  
|                        
|                        
+    +    +    +    + 2011  
|                        
|                        
|                        
|                        
+    +    +    +    +    
|               2014 13        
|                        
|             ↺          
|            2012           
+    +    +    +    +    
|                        
|        2016   2017 15           
|                        
|                        
+    +    +    +    +    
|                        
|                        
|                        
|        2018               
+    +    +    +    +    
|                        
|                        
|                        
|                        
 0----+----+----+----+---0