l1 = Flatten(Sequence[Sequence[(j, i), i, 0, 7], j, 0, 7])
A1: (-y^(2)) - (2 * x) + (7 * y) = 0
B1: (-x^(2)) + (7 * x) - (2 * y) = 0
C1: (-x^(2)) + ((2 * x) * y) - y^(2) + (3 * x) + (3 * y) = 2
D1: (-x^(2)) + (7 * x) - (2 * y) = -2
E1: x^(2) + ((2 * x) * y) + y^(2) - (11 * x) - (17 * y) = -30
F1: (-y^(2)) + (2 * x) + (7 * y) = 12
G1: (-x^(2)) - ((2 * x) * y) - y^(2) + (17 * x) + (11 * y) = 30
H1: (-x^(2)) + ((2 * x) * y) - y^(2) - (3 * x) - (3 * y) = -40
I1: (-x^(2)) + (7 * x) + (2 * y) = 12
J1: (-x^(2)) + (7 * x) + (2 * y) = 14
K1: (-y^(2)) - (2 * x) + (7 * y) = -2
L1: (-y^(2)) + (2 * x) + (7 * y) = 14