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All answers having "Kings and queens" as clue:

3 Character Answers:

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DRY



4 Character Answers:

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BEDS



5 Character Answers:

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CARDS



6 Character Answers:

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HONORS

PIECES

ROYALS

RULERS



7 Character Answers:

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ROYALTY

TWOPAIR



8 Character Answers:

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CHESSMEN

MONARCHS



9 Character Answers:

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FACECARDS

MAJESTIES



10 Character Answers:

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SOVEREIGNS