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All answers having "Switch" as clue:

3 Character Answers:

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ROD

TAN



4 Character Answers:

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BEAT

LASH

SWAP



5 Character Answers:

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BIRCH

GEARS

ONOFF

SHUNT

TRADE



6 Character Answers:

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REBOOT



7 Character Answers:

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ECSTASY



8 Character Answers:

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EXCHANGE

SOLENOID



9 Character Answers:

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TRANSPOSE



11 Character Answers:

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INTERCHANGE