{{b[1], b[2], b[2], b[3]}, {-b[1], (-b[2] + b[3])/2, -b[2] + b[3], (7*b[2] - b[3])/2}, {-b[2], -b[2], b[1] + (5*b[2])/2 - b[3]/2, (-b[2] + 3*b[3])/2}, {(b[2] - b[3])/2, b[2] - b[3], (-b[1] + b[2])/2, (-b[1] + 4*b[2] + b[3])/2}, {(-7*b[2] + b[3])/2, (-2*b[1] - 5*b[2] + b[3])/2, (b[2] + b[3])/2, (b[2] + b[3])/2}, {-b[3], (b[1] - b[2])/2, (b[2] + b[3])/2, (b[1] + 4*b[2] - b[3])/2}, {(b[2] - 3*b[3])/2, (-b[2] - b[3])/2, (b[1] + b[2])/2, (b[1] + b[2])/2}, {(-b[2] - b[3])/2, (-b[2] - b[3])/2, (-b[1] - 4*b[2] + b[3])/2, (-b[1] - 6*b[2] + 3*b[3])/2}, {(b[1] - 4*b[2] - b[3])/2, (-b[1] - b[2])/2, (-b[1] - b[2])/2, (b[1] + 6*b[2] - 3*b[3])/2}}
{{b[1], b[2], b[2], b[3]}, {-b[1], -b[2] + b[3], (-b[2] + b[3])/2, (7*b[2] - b[3])/2}, {-b[2], -b[2], b[1] + (5*b[2])/2 - b[3]/2, (-b[2] + 3*b[3])/2}, {b[2] - b[3], (b[2] - b[3])/2, (-b[1] + b[2])/2, (-b[1] + 4*b[2] + b[3])/2}, {(-7*b[2] + b[3])/2, (-2*b[1] - 5*b[2] + b[3])/2, (b[2] + b[3])/2, (b[2] + b[3])/2}, {-b[3], (b[1] - b[2])/2, (b[2] + b[3])/2, (b[1] + 4*b[2] - b[3])/2}, {(b[2] - 3*b[3])/2, (-b[2] - b[3])/2, (b[1] + b[2])/2, (b[1] + b[2])/2}, {(-b[2] - b[3])/2, (-b[2] - b[3])/2, (-b[1] - 4*b[2] + b[3])/2, (-b[1] - 6*b[2] + 3*b[3])/2}, {(b[1] - 4*b[2] - b[3])/2, (-b[1] - b[2])/2, (-b[1] - b[2])/2, (b[1] + 6*b[2] - 3*b[3])/2}}