id: 292 yr ( 6, (2, 0, 2, 2)) (( 9.0, 8.9 ), ( 2.8, 6.1 ))
 +13                         |      +4 
                          |       
                          |    2017  
                          |       
 +    +    +    +    +    +    +  
                          |  2013    
                          |       
                          |       
                          |       
 +    +    +    +    +    +    +  
                       2018  |       
                          |       
                          |       
                    2015     |       
 +    +    +    +    +    +    +  
                         |       
                          |       
                          |       
                          |       
-+----+----+----+----+----+----+--
                          |       
                          |       
                          |       
                          |       
 +    +    +    +    +    +    +  
                          |       
                          |       
                          |       
                          |       
 +    +    +    +    +    +    +  
                          |       
   2016                      |       
  2014                       |       
                          |       
 -10+    +    +    +    +    +    + -19