id: 264 yr ( 7, (0, 0, 7, 0)) (( 3.0, 3.0 ), ( 7.1, 6.3 ))
 +0---+----+----+----+----+----+0 
                             |
                             |
                             |
                             |
    +    +    +    +    +    +
                             |
                        2011    |
                             |
                             |
    +    +    +    +    +    +
                    2012        |
                             |
                             |
                             |
    +    +    +    +    +    +
               2017 16 13             |
                             |
                             |
                             |
    +    +    +    +    +    +
                             |
                             |
         2015                   |
                             |
    +    +    +    +    +    +
                             |
  2014                          |
                             |
 -13                            -12