Three of the following four letter-clusters are alike in a certain way and one is different. Pick the odd one out.
In AWDZ, A-Z and W-D are opposite letters.
UQJF --> U-F and Q-J are opposite letters.
OKPL --> O-L and K-P are opposite letters.
IDWS --> I-L are not opposite letters.
Hence, IDWS is odd letter cluster.
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