Do not rush to guess the diamond suit. Ruff the club lead with the ten. A tiny safety play to cater to West's having eleven clubs! Draw trumps (they divide two-one). Now you can discard dummy's heart on the ace of clubs, play the ace and king of hearts, and ruff a heart. With clubs and hearts eliminated, you can lead the ten of diamonds for a finesse. Whatever West wins with, he has to give you a sluff and a ruff or lead a diamond. Either clears up your problems.
A K 10 7 6
10 8 4
Q 10 9 8 4
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