1:(2 × (5 + 8)) - 2
2:2 × (5 + 8) - 2
3:(2 × (8 + 5)) - 2
4:2 × (8 + 5) - 2
5:(5 + 8) × 2 - 2
6:((5 + 8) × 2) - 2
7:(8 + 5) × 2 - 2
8:((8 + 5) × 2) - 2