None Vulnerable	North
West ♠  Q 5 3 2 ♥  Q 10 4 ♦  A Q 8 4 ♣  A K		East ♠  K J 10 8 ♥  A 9 ♦  9 7 2 ♣  Q 5 4 3
	South
W N E S 1NT - 2♣ - 2♠ - 4♠ - Pass -
With 4 cards in a major suit bid 2♣ (Stayman Convention).   Opener will bid his 4-card major at the 2-level, or bid 2♦ without a 4-card major. Next Exception : when Responder's hand is shaped 4333 bid NT, do not use Stayman.   6 5 4 3 2 With 6 bid 4       With 5 bid 3       With 4 bid 2♣