/-------------------------------------------------------------------- Sphfalx0018s0105.1.p/268-318 (1)
      |                                                                               
      |-------------------------------------------------------------------- Sphfalx0086s0087.1.p/237-289 (4)
      |                                                                               
      |                                                  /----------------- Sphfalx0198s0032.1.p/72-129  (2)
      +                                 /-------95-------+                            
      |                                 |                \----------------- Sphfalx0144s0014.1.p/75-131  (5)
      |                /-------53-------+                                             
      |                |                \---------------------------------- Sphfalx0036s0080.1.p/91-147  (3)
      \-------96-------+                                                              
                       |                                 /----------------- Sphfalx0186s0019.1.p/47-98   (6)
                       \----------------70---------------+                            
                                                         \----------------- Sphfalx0051s0099.1.p/101-158 (7)
                                                                                      

      /-------------------------------------------------------------------- Sphfalx0186s0019.1.p (1)
      |                                                                               
      |                      /--------------------------------------------- Sphfalx0144s0014.1.p (2)
      |                      |                                                        
      |                      |                     /----------------------- Sphfalx0036s0080.1.p (3)
      |----------100---------+----------60---------+                                  
      +                      |                     \----------------------- Sphfalx0051s0099.1.p (5)
      |                      |                                                        
      |                      \--------------------------------------------- Sphfalx0198s0032.1.p (4)
      |                                                                               
      |                                            /----------------------- Sphfalx0086s0087.1.p (6)
      \---------------------100--------------------+                                  
                                                   \----------------------- Sphfalx0018s0105.1.p (7)