{{b[1], b[2], b[1]/3 - (2*b[2])/3, b[1]/3 - (2*b[2])/3}, {-b[1], b[1]/9 + b[2]/9, b[1]/9 + b[2]/9, (4*b[1])/9 - (5*b[2])/9}, {-1/9*b[1] - b[2]/9, -1/9*b[1] - b[2]/9, (-5*b[1])/9 + (4*b[2])/9, (2*b[1])/9 - (7*b[2])/9}, {-b[2], (5*b[1])/9 - (4*b[2])/9, (5*b[1])/9 - (4*b[2])/9, (5*b[1])/9 - (4*b[2])/9}, {(-5*b[1])/9 + (4*b[2])/9, (-5*b[1])/9 + (4*b[2])/9, (8*b[1])/9 - (10*b[2])/9, (7*b[1])/9 - (11*b[2])/9}, {(-4*b[1])/9 + (5*b[2])/9, (-8*b[1])/9 + (10*b[2])/9, (-2*b[1])/3 + b[2]/3, -b[1] + b[2]}, {-1/3*b[1] + (2*b[2])/3, -1/3*b[1] + (2*b[2])/3, (2*b[1])/3 - b[2]/3, b[1]}, {(-2*b[1])/9 + (7*b[2])/9, (-7*b[1])/9 + (11*b[2])/9, b[1] - b[2], -b[1]}}