Double dummy grand slam

Double dummy grand slam

A Q 7
A K Q J
Q J 10 9 8 7
K J 10 8 6
5 4 3 2
K Q J 10
N
W   E
 
S
9 5 4 3 2
6 5 4 3 2
4 3 2
10 9 8 7 6
A K
A 9 8 7 6 5

Contract:

7 by South

Lead:

K

Today we can see through cards and know that West has four trumps and a void in diamonds. Find the play to make all thirteen tricks.