The Dressage Arena is composed of sequences of letters, no one knows for sure how the sequence of letters were developed, but below are diagrams of the 20 by 40 meter dressage arena with some acronyms to assist with learning the letter patterns as well as the same for the 20 by 60 meter dressage arena.

20 by 40 Meter Dressage Arena
65.61 by 131.2 feet

Acronyms for the 20 x 40 meter dressage arena.

1. All Fat Brown Mares Can hardly Ever Kick
2. All King Edwards Horses Consume Much Bad Feed
3. All King Edwards Horses Can't Make Big Fences
4. All Kind Elephants have Cute Monters, Bald Fathers
5. All King Edwards Horses Can Move Beautifully Forward
6. All King Edwards Horses Can Make Beautiful Foals
The center line markers are A - D - X - G - C

20 by 60 Meter Dressage Arena
65.61 by 196.85 feet

 

1. All King Victor Emmanuels Show Horses Can Make Really Beautiful People Fall
2. Any Kind Vet Enjoys Sharing Horse Care Methods Recommended by Professional Farms
3. All King Edwards Superb Horses Can Make Really Big Perfect Fences