Sylla-Steps #3

by Dave Fisher

Using the clues, enter one of the word fragments (from the syllabary below) in each of the 32 boxes to form 8 four-syllable words. Each word fragment is used only once. When complete the letters in the two diagonal flights of stairs (shaded cells) will spell out a topical subject. I've entered one fragment to start you off.

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For more Sylla-Steps word puzzles, follow these links:
Sylla-Steps #1, Sylla-Steps #2
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