id: 288 yr ( 9, (0, 0, 9, 0)) (( 2.1, 1.9 ), ( 8.4, 3.1 ))
 +0--+----+----+----+-+0 
                  |  
                  |  
                  |  
                  |  
   +    +    +    +  
                  |  
                  |  
                  |  
                  |  
   +    +    +    +  
                2014 2013  
                  |  
                  |  
                  |  
   +    +    +    +  
             2015    |  
                  |  
         2012        |  
           ↶      |  
   +    +    +    +  
             2018    |  
                  |  
       2016 2020 2019      |  
                  |  
   +    +    +    +  
                  |  
  2017               |  
                  |  
 -13                 | -7