There are a total of 5 cards left that would be clubs. There are a total of 24 cards used in this game. 5 to each player with 4 left in the pile, 1 turned over. Whatever is called trump you will have an extra card, so there will be a total of 7 cards that could be used for trump. 9, 10, Queen, King, Ace and both Jacks being the highest (either red or black).
Hope this answers your question!