id: 136 yr ( 10, (7, 0, 1, 2)) (( 6.8, 6.9 ), ( 6.3, 0.9 ))
 +16                  |             +12 
                   |              
                   |           2021  
                   |              
    +    +    +    +    +    +    
                   |              
                   |              
                   |              
                   |    2015         
    +    +    +    +    2013    +    
                   |   2019          
                   | 2014 12            
                   |2016             
                   |              
    +    +    +    +    +    +    
                 2020 |              
                   |              
                2018  |              
                   |              
----+----+----+----+----+----+----
                   |              
                   |              
                   |              
                   |              
    +    +    +    +    +    +    
                   |              
                   |              
                   |              
                   |              
    +    +    +    +    +    +    
  2017                |              
                   |              
 -11                  |             -16