1: (2 - 10) × (5 - 8)
2: (5 - 8) × (2 - 10)
3: (8 - 5) × (10 - 2)
4: 8 × (10 - (2 + 5))
5: 8 × (10 - 2 - 5)
6: 8 × ((10 - 2) - 5)
7: 8 × (10 - (5 + 2))
8: 8 × (10 - 5 - 2)
9: 8 × ((10 - 5) - 2)
10: (10 - (2 + 5)) × 8
11: (10 - 2 - 5) × 8
12: ((10 - 2) - 5) × 8
13: (10 - 2) × (8 - 5)
14: (10 - (5 + 2)) × 8
15: (10 - 5 - 2) × 8
16: ((10 - 5) - 2) × 8