(2-(6-7))*8
((2-6) 7)*8
((2 7)-6)*8
(2 (7-6))*8
(2*(7 8))-6
(2*(8 7))-6
(7-(6-2))*8
((7-6)2)*8
((7 2)-6)* 8
(7 (2-6))*8
((7 8)*2)-6
8*(2-(6- 7))
8*((2-6) 7)
8*((2 7)-6)
8*(2 (7 -6))
8*(7-(6-2))
8*((7-6) 2)
((8 7 )*2)-6
8*((7 2)-6)
8*(7 (2-6))