id: 251 yr ( 7, (3, 3, 1, 0)) (( 4.5, 4.6 ), ( 1.7, 4.3 ))
 +3            |                  +9 
             |                   
             |                2012  
   +    +    +    +    +    +    
             |                   
             |                   
             |            2017 16      
             |                   
---+----+----+----+----+----+----
             |                   
             |          2015        
             |                  
             |      2014 11            
   +    +    +    +    +    +    
             |                   
             |                   
             |                   
             |                   
   +    +    +    +    +    +    
             |                   
             |                   
             |                   
             |                   
   +    +    +    +    +    +    
             |                   
             |                   
             |                   
             |                   
   +    +    +    +    +    +    
             |                   
  2013          |                   
             |                   
 -12            |                  -7