A1: Pass partner left shoulder; balance once to next. Swing.
A2: Cast back right shoulder; balance to partner. Swing.
B1: Ones keep swinging.
B2: Ones promenade inside: acknowledge twos, threes, fours.
A3: Threes arch, heads cross, California twirl. Ones arch, back.
A4: All that again.
B3: All circle left (skip-change step).
B4: Promenade home.
Sometimes both heads and sides do the crossing in A3 and A4.