The Centers part is a Trade - from either a Mini-Wave or a Couple. EN: 60
The Ends part is a Circulate - move forward to the next position within the formation. EN: 70
Acey Deucey is not legal from formations where the End's Circulate path
causes them to move into the center (e.g., Mini-Wave Columns, the
In-Facing Ends' Circulate path would cause them to end in the center). EN: 80
From Parallel Lines, Twin Diamonds, a Generalized Thar,
or other applicable formations.
Centers Trade and Spread as the Ends
Crossover Circulate. EN: 201
From most formations Trade The Deucey is equivalent to Acey Deucey & Spread. EN: 90