Place letters in some of the squares so that each of the listed words is spelled out across or down. Words may not touch each other, even diagonally. Letters outside the grid must appear at least once in that row or column.

1.

ONE TWO THREE FOUR FIVE SIX

2.

CHAD CHILE CHINA CONGO CUBA

3.

BLUE CYAN GRAY PINK RED TAN

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4.

ADAMS BUSH FORD POLK TAFT

5.

APE BEAR CAT COW DEER DOG PIG

6.

ALPHA ETA MU PI TAU PHI OMEGA

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7.

BLAKE CAMUS HUGO KING POE TWAIN WELLS WILDE WOOLF

8.

AGATE AMBER DIAMOND EMERALD ONYX OPAL PEARL RUBY

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The solutions are here.