Class Coord
   size=48 align=4
   base size=48 base align=4
Coord (0x0x7f036ffb7720) 0

Class Contact
   size=60 align=4
   base size=60 base align=4
Contact (0x0x7f036fe9f270) 0
  Coord (0x0x7f036ffb7780) 0

