4: 2 spades, 1 heart, 0 diamonds, and 1 club. Declarer needs to be careful about entries to dummy. There aren't any clear ways over there. Declarer should try to discard a spade or club loser on the K, but needs luck in either spades or hearts. Declarer needs to see the potential of a heart entry with the 9 rather than drawing the trumps and putting all his eggs in the spades basket.