Deal 21	♠ A J 10 8 2 ♥ A K 8 2 ♦ Q 2 ♣ 10 5		WEST   NORTH   EAST   SOUTH 1♠ pass 2♦ pass 2♥ pass 2NT pass 3NT pass pass pass North opens 1♠. South responds 2♦, a 2/1 force to game. North's priority is to now show the 4-card ♥ suit. Remember that South might also have 4 ♥s. South doesn't have 4 ♥s, nor does she have 3 ♠s. She does, however, have stoppers in ♣s so she bids 2NT. North happily says 3NT.  Deal 22
	♠ 7 4 ♥ Q 7 3 ♦ A K J 7 3 ♣ K J 9