From a 2 x 4.
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.
Note: From Parallel Waves or Two-Faced Lines, Drift Apart is equivalent to
Tandem Cross Roll To A Line | Wave
(except that not all dancers can Roll on a Drift Apart).
Crossover Circulate [A1] :
From a Generalized 2 x 4, Generalized Thar, or other applicable formations.
As one movement, Circulate & Half Sashay.