Puzzle personnel

5 × 5 6 × 6 5 × 4 10 × 8 20 × 1 15 × 10 8 × 5 10 × 8 10 × 7 8 × 5 10 × 6 7 × 10 10 × 6 13 × 8 9 × 6 9 × 6 12 × 8 10 × 6 7 × 4 9 × 6 12 × 8 10 × 6 10 × 6 11 × 8 13 × 9 7 × 10 16 × 10 8 × 6 20 × 15 16 × 11 13 × 12 16 × 10 20 × 12 11 × 15 14 × 10 11 × 16 2 × 30 9 × 6 8 × 6