Symmetry: 90 degree
Size: 168 cells
Four Playfair codewords appear in the perimeter rows and columns. Clues to symmetrically opposite lights are paired, with encoded forms of some given; lights in central row and column are Playfair-coded using a fifth codeword.
Highlight the line below this, to reveal the codewords:
Powdering-tubs, Consumptively, Pneumogastric, Salpingectomy, Ambidextrous