{{b[1], b[2], b[2], -2*b[1] + 2*b[2]}, {-b[1], (-9*b[1])/2 + 4*b[2], b[1], (3*b[1])/2}, {-b[2], -b[2], -1/2*b[1] + 2*b[2], -1/2*b[1] + 2*b[2]}, {(b[1] - 4*b[2])/2, (b[1] - 4*b[2])/2, -1/2*b[1] + b[2], -1/2*b[1] + b[2]}, {2*(b[1] - b[2]), (9*b[1])/2 - 4*b[2], 5*b[1] - 4*b[2], (7*b[1])/2 - 2*b[2]}, {-b[1], -5*b[1] + 4*b[2], b[1]/2, b[1]/2}, {(-3*b[1])/2, -1/2*b[1], -1/2*b[1], (-7*b[1])/2 + 4*b[2]}, {(b[1] - 2*b[2])/2, (b[1] - 2*b[2])/2, (-7*b[1])/2 + 2*b[2], (7*b[1])/2 - 4*b[2]}}