Keep it Down!

Keep it Down! by Michael Baker
Please note: due to a limitation in the web interface, you cannot enter more than one letter in a box on a Mac or Ipad.
So if you are doing this on an Apple product, type in the First letter, or click "Reveal Letter" to see the actual letters.
On a Windows machine, press the Insert Key to enter more than one letter in a box, then click to the next box.

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More Puzzles: Michael's Puzzle Page.