EW Vulnerable	North
West ♠  10 2 ♥  A 7 ♦  K 10 3 ♣  K J 10 9 5 3		East ♠  A K 8 6 3 ♥  K 9 6 4 3 2 ♦  9 ♣  2
	South
W N E S 1♣ - 1♥ - 1NT - 3♠ - 4♥ - Pass -
West must choose between Partner's two suits. He either bids the suit in which he has the most cards, or when he holds the same number in both suits (as in this case) he bids the suit Partner bid first.