id: 342 yr ( 7, (3, 0, 1, 3)) (( 16.1, 15.5 ), ( 1.0, 4.2 ))
 +12                          |     +7 
                           |      
                           |   2017 15 13  
                           |      
  +    +    +    +    +    +    + 
                           |      
                          2014|      
                         2016 |      
                        2018 |      
--+----+----+----+----+----+----+-
                           |      
                           |      
                           |      
                           |      
  +    +    +    +    +    +    + 
                           |      
                           |      
                           |      
                           |      
  +    +    +    +    +    +    + 
                           |      
                           |      
                           |      
                           |      
  +    +    +    +    +    +    + 
                           |      
                           |      
                           |      
                           |      
  +    +    +    +    +    +    + 
                           |      
                           |      
  2012                        |      
                           |      
 -38 +    +    +    +    +    +    +-41