From facing couples: Square Thru 2 to a wave; Cast 1/2; Centers Trade; Step and Fold.
Catch XY: From facing lines or 8 chain thru: Square Thru X (hands) to a wave; Cast off Y quarters; Centers Trade; Step and Fold.
Catch The Lock XY: From facing lines or 8 chain thru: Square Thru X (hands) to a wave; Cast Off Y quarters; each wave Lockit; Step and Fold.