id: 224 yr ( 6, (6, 0, 0, 0)) (( 2.4, 2.4 ), ( 9.2, 10.2 ))
 +13                            +14 
|                             
+    +    +    +    +    + 2017  
|                             
|                      2014 2013    
|                             
|                             
+    +    +    +    +    +    
|                            
|                             
|                2015   2018        
|                             
+    +    +    +    +    +    
|                             
|                             
|                             
|                             
+    +    +  2016 +    +    +    
|                             
|                             
|                             
|                             
+    +    +    +    +    +    
|                             
|                             
|                             
|                             
 0----+----+----+----+----+---