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All answers having "Pattern" as clue:

4 Character Answers:

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IDOS

MOLD

NORM

RULE



5 Character Answers:

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DELAY

MODEL

MOTIF

RILED

TREND



6 Character Answers:

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DESIGN

FIGURE

FORMAT

MATRIX

SCHEMA



7 Character Answers:

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STENCIL

TEMPLET



8 Character Answers:

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TEMPLATE



11 Character Answers:

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HERRINGBONE



13 Character Answers:

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CONSTELLATION