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All answers having "Lead ___" as clue:

3 Character Answers:

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INS

ORE

RED

TIP

VAN



4 Character Answers:

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CLUE

HEAD

HELM

HERO

MAIN

STAR



5 Character Answers:

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GUIDE

LEASH

METAL

START

STEER



6 Character Answers:

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ASTRAY

DIRECT



7 Character Answers:

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BADDEAL

BEFIRST

CAPTAIN

GOFIRST

PRECEDE



8 Character Answers:

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GRAPHITE

SHEPHERD

VANGUARD



9 Character Answers:

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SPEARHEAD



10 Character Answers:

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SETTHEPACE