Eight antique airplanes are being considered for storage in two warehouses (East and West). The airplanes are single wing (Dino Kressna, Bonner and Lear) and double wing (Rickenbacher, Air-heart, Orville and Wilbur).
Neither of the two warehouses may go unoccupied.
The Dino and the Kressna may not be stored in the same warehouse.
The Lear and the Air-heart are owned by the same pilot and must be stored together in the same warehouse.
The Dino and the Rickenbacher are serviced by the same mechanic and must be stored together in the same warehouse. At least seven of the airplanes must be stored in the ware-house.