id: 122 yr ( 10, (7, 0, 3, 0)) (( 4.6, 4.4 ), ( 1.5, 1.8 ))
 +8  +    +    +    +    +    +   +10 
             |                   
             |                2021  
             |                   
             |                   
   +    +    +    +    +    +    
             |        2016 12          
             |     2015 2014           
             |                   
             |     2013             
   +    +    +    +    +    +    
             |   2017               
             |                  
             |                   
             |                   
---+----+----+----+----+----+----
             |                   
             |                   
             |                   
           2019 |                   
   +    +    +    +    +    +    
             |                   
             |                   
             |                   
             |                   
   +    +    +    +    +    +    
    2018        |                   
             |                   
  2020          |                   
             |                   
 -7  +    +    +    +    +    +   -6