id: 253 yr ( 7, (0, 2, 5, 0)) (( 5.2, 5.4 ), ( 9.1, 5.0 ))
 +0----+----+----+----+----+----+-+3 
                         |       
                         |    2012  
                         |       
                         |       
+    +    +    +    +    + 2014  +  
                         |       
                         |       
                         |       
                         |       
+    +    +    +    +    +    +  
                         |       
                         |       
                  2015 2018    |       
                         |       
+    +    +    +   +    +    +  
                         |       
                         |       
                         |       
                         |       
+    +    + 2017  +    +    +    +  
          2016              |       
                         |       
                         |       
                         |       
+    +    +    +    +    +    +  
                         |       
                         |       
  2013                      |       
                         |       
 -18    +    +    +    +    +    + -14