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