What are 5 parts of a drum brake system?

Here are the list of Drum Brake Parts:

Bleeder Screw Cap

Bleeder Screw

Wheel Cylinder Cup

Wheel Cylinder Boot

Wheel Cylinder

Wheel Cylinder Piston

Shoe to Shoe Spring

Strut

Strut to Shoe Spring

Parking Lever

Leading Shoe and Lining

Anchor

Retainer Pin

Trailing Brake Shoe

Shoe Hold Down Spring

Shoe Return Spring

Latch

Adjusting Lever

Stopper

Spring

Pin

Brake Drum