Ends Split Circulate twice as Out-facing Centers Crossover Circulate and Circulate as In-facing Centers Circulate and Crossover Circulate.
Ends in a 2 x 4.
Drift Apart is a 2-part call.
From Parallel Waves:
Crossover Circulate [A1] :
From a Generalized 2 x 4, Generalized Thar, or other applicable formations.
As one movement, Circulate & Half Sashay.