From an applicable 2 x 2.
Box Circulate; Leaders U-Turn Back (toward the Center of the 2 x 2).
Ends in a 2 x 2.
Couple Up is a 2-part call.
anything Couple Up or anything Like A Couple Up [C3A]:
Do the anything call; Leaders U-Turn Back.
Note: On anything Couple Up, if the anything call
is a Circulate the word 'Circulate' is conventionally omitted. Similarly, for
Counter Rotate 1/4 the words 'Rotate 1/4' are conventionally
omitted. For example, In Roll Couple Up means In Roll Circulate then Leaders
U-Turn Back; Split Counter Couple Up means Split Counter Rotate 1/4 then
Leaders U-Turn Back.
CONTRAST THE FOLLOWING:
Trade Couple Up: Trade Circulate; Leaders U-Turn Back.
Trade Like A Couple Up: Partner Trade; Leaders U-Turn Back.