X + y greater than or
- x y greater than or equal to
- x y greater than or equal to 8
- x + y greater than or equal to 7
- x y greater than or equal to 0
- x y greater than or equal to 6
- x y greater than or equal to 2
- x y greater than or equal to 5
- x y greater than or equal to 3
- x y greater than or equal to 1
- x y greater than or equal to 4
