id: 9 yr ( 8, (5, 0, 0, 3)) (( 3.0, 3.3 ), ( 7.6, 1.4 ))
 +15+    +    +    +    +   +10 
      |                   
      |                2011  
      |                   
      |                   
 +    +    +    +    +    
      |                   
      |                   
      |                   
      |                   
 +    +    +    +    +    
      |                   
      |                   
      |                   
      |                   
 +    +   2015 13+    +    +    
      |                  
      2012                   
      |                   
    2016 | 2018 17                 
 +    +    +    +    +    
  2014   |                   
      |                   
      |                   
      |                   
 +    +    +    +    +    
      |                   
      |                   
      |                   
      |                   
 0+----+----+----+----+----3