Set 7 West hands

 
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#1) West deals, N-S Vul.,  North bids spades, and then if possible, South bids 2

A Q 9 3
--
K Q 10 7 6
K Q 10 4 

#2) East deals, both vulnerable

K 10 8 3
4
A K 4
A K 5 3 2

#3) West deals, nobody vulnerable

Q 9 3
Q 7
A K
A K J 7 6 4

#4) West deals, nobody vulnerable

K Q 10 9 2
--
A 9 5 4
A 10 9 8