id: 335 yr ( 10, (1, 0, 4, 5)) (( 5.4, 5.3 ), ( 1.2, 4.4 ))
 +4                           |    +3 
                            |     
                            |  2021  
   +    +    +    +    +    +    +
                            |     
                         2016 14 2018|     
                            |     
                        2015   |     
---+----+----+----+---2012+----+----+
                      2019 13     |     
                           |     
                            |     
                            |     
   +    +    +    +    +    +    +
                            |     
                            |     
                            |     
                            |     
   +    +    +2017   +    +    +    +
                            |     
                            |     
                            |     
                            |     
   +    +    +    +    +    +    +
                            |     
                            |     
                            |     
                            |     
   +    +    +    +    +    +    +
                            |     
  2020                         |     
                            |     
 -16                           |    -18