Deal 23
 
 
 
♠ 10 8 2
A 2
A 8 5 4 2
♣ Q 8 5
 
 WEST  NORTH  EAST  SOUTH
passpass1♠
pass2pass2
pass2♠passpass
pass

North passes and South opens 1♠.

North now bids 2. Since North originally passed this is NOT 2/1 Game Force. Instead, it is forcing for one round and shows 11 or more points.

South next shows her 4-card suit.
North gives a preference to 2♠.

Knowing that North does not have opening strength South passes 2♠.

 Deal 24 
  ♠ A K 9 7 4
K Q 6 3
7 3
♣ 10 7