mx4 = (b2^4*b5-b2^2*b3*b4*b5+2*b2^2*b5^3+b3^4*b5-b3^3*b4*b5+2*b3^2*b5^3-b3*b4^3*b5-4*b3*b4*b5^3+b4^4*b5+2*b4^2*b5^3)

mx3y = (-4*b2^4*b5+4*b2^2*b3*b4*b5-4*b2^2*b5^3-4*b3^4*b5+4*b3^3*b4*b5-4*b3^2*b5^3+4*b3*b4^3*b5+6*b3*b4*b5^3-4*b4^4*b5-4*b4^2*b5^3)

mx2y2 = (6*b2^4*b5-6*b2^2*b3*b4*b5+2*b2^2*b5^3+6*b3^4*b5-6*b3^3*b4*b5+2*b3^2*b5^3-6*b3*b4^3*b5+b3*b4*b5^3+6*b4^4*b5+2*b4^2*b5^3+4*b5^5)

mxy3 = (-4*b2^4*b5+4*b2^2*b3*b4*b5-4*b3^4*b5+4*b3^3*b4*b5+4*b3*b4^3*b5-4*b3*b4*b5^3-4*b4^4*b5-4*b5^5)

my4 = (b2^4*b5-b2^2*b3*b4*b5+b3^4*b5-b3^3*b4*b5-b3*b4^3*b5+b3*b4*b5^3+b4^4*b5+b5^5)

mx3 = (b2^4*b3^4*b5^2-b2^4*b3^3*b4*b5^2-b2^4*b3*b4^3*b5^2+b2^4*b3*b4*b5^4+b2^4*b4^4*b5^2+b2^4*b5^6-b2^2*b3^5*b4*b5^2+b2^2*b3^4*b4^2*b5^2+3*b2^2*b3^3*b4*b5^4+b2^2*b3^2*b4^4*b5^2-7*b2^2*b3^2*b4^2*b5^4+2*b2^2*b3^2*b5^6-b2^2*b3*b4^5*b5^2+3*b2^2*b3*b4^3*b5^4-4*b2^2*b3*b4*b5^6+2*b2^2*b4^2*b5^6-b3^5*b4^3*b5^2+b3^5*b4*b5^4+2*b3^4*b4^4*b5^2-5*b3^4*b4^2*b5^4+b3^4*b5^6-b3^3*b4^5*b5^2+8*b3^3*b4^3*b5^4-4*b3^3*b4*b5^6-5*b3^2*b4^4*b5^4+6*b3^2*b4^2*b5^6+b3*b4^5*b5^4-4*b3*b4^3*b5^6+b4^4*b5^6)

mx2y = (-3*b2^4*b3^4*b5^2+3*b2^4*b3^3*b4*b5^2+3*b2^4*b3*b4^3*b5^2-3*b2^4*b3*b4*b5^4-3*b2^4*b4^4*b5^2-3*b2^4*b5^6+3*b2^2*b3^5*b4*b5^2-3*b2^2*b3^4*b4^2*b5^2-3*b2^2*b3^3*b4*b5^4-3*b2^2*b3^2*b4^4*b5^2+9*b2^2*b3^2*b4^2*b5^4-2*b2^2*b3^2*b5^6+3*b2^2*b3*b4^5*b5^2-3*b2^2*b3*b4^3*b5^4+6*b2^2*b3*b4*b5^6-2*b2^2*b4^2*b5^6+3*b3^5*b4^3*b5^2-3*b3^5*b4*b5^4-6*b3^4*b4^4*b5^2+7*b3^4*b4^2*b5^4-3*b3^4*b5^6+3*b3^3*b4^5*b5^2-8*b3^3*b4^3*b5^4+6*b3^3*b4*b5^6+7*b3^2*b4^4*b5^4-6*b3^2*b4^2*b5^6-3*b3*b4^5*b5^4+6*b3*b4^3*b5^6-3*b4^4*b5^6)

mxy2 = (3*b2^4*b3^4*b5^2-3*b2^4*b3^3*b4*b5^2-3*b2^4*b3*b4^3*b5^2+3*b2^4*b3*b4*b5^4+3*b2^4*b4^4*b5^2+3*b2^4*b5^6-3*b2^2*b3^5*b4*b5^2+3*b2^2*b3^4*b4^2*b5^2+3*b2^2*b3^2*b4^4*b5^2-3*b2^2*b3^2*b4^2*b5^4-3*b2^2*b3*b4^5*b5^2-3*b2^2*b3*b4*b5^6-3*b3^5*b4^3*b5^2+3*b3^5*b4*b5^4+6*b3^4*b4^4*b5^2-3*b3^4*b4^2*b5^4+3*b3^4*b5^6-3*b3^3*b4^5*b5^2-3*b3^3*b4*b5^6-3*b3^2*b4^4*b5^4+3*b3*b4^5*b5^4-3*b3*b4^3*b5^6+3*b4^4*b5^6)

my3 = (-b2^4*b3^4*b5^2+b2^4*b3^3*b4*b5^2+b2^4*b3*b4^3*b5^2-b2^4*b3*b4*b5^4-b2^4*b4^4*b5^2-b2^4*b5^6+b2^2*b3^5*b4*b5^2-b2^2*b3^4*b4^2*b5^2-b2^2*b3^2*b4^4*b5^2+b2^2*b3^2*b4^2*b5^4+b2^2*b3*b4^5*b5^2+b2^2*b3*b4*b5^6+b3^5*b4^3*b5^2-b3^5*b4*b5^4-2*b3^4*b4^4*b5^2+b3^4*b4^2*b5^4-b3^4*b5^6+b3^3*b4^5*b5^2+b3^3*b4*b5^6+b3^2*b4^4*b5^4-b3*b4^5*b5^4+b3*b4^3*b5^6-b4^4*b5^6)

mx2 = (-b2^4*b3^5*b4^3*b5^3+b2^4*b3^5*b4*b5^5+2*b2^4*b3^4*b4^4*b5^3-b2^4*b3^4*b4^2*b5^5+b2^4*b3^4*b5^7-b2^4*b3^3*b4^5*b5^3-b2^4*b3^3*b4*b5^7-b2^4*b3^2*b4^4*b5^5+b2^4*b3*b4^5*b5^5-b2^4*b3*b4^3*b5^7+b2^4*b4^4*b5^7+b2^2*b3^6*b4^4*b5^3-b2^2*b3^6*b4^2*b5^5-2*b2^2*b3^5*b4^5*b5^3-b2^2*b3^5*b4*b5^7+b2^2*b3^4*b4^6*b5^3+2*b2^2*b3^4*b4^4*b5^5+2*b2^2*b3^3*b4^3*b5^7-b2^2*b3^2*b4^6*b5^5-b2^2*b3*b4^5*b5^7)

mxy = (2*b2^4*b3^5*b4^3*b5^3-2*b2^4*b3^5*b4*b5^5-4*b2^4*b3^4*b4^4*b5^3+2*b2^4*b3^4*b4^2*b5^5-2*b2^4*b3^4*b5^7+2*b2^4*b3^3*b4^5*b5^3+2*b2^4*b3^3*b4*b5^7+2*b2^4*b3^2*b4^4*b5^5-2*b2^4*b3*b4^5*b5^5+2*b2^4*b3*b4^3*b5^7-2*b2^4*b4^4*b5^7-2*b2^2*b3^6*b4^4*b5^3+2*b2^2*b3^6*b4^2*b5^5+4*b2^2*b3^5*b4^5*b5^3-2*b2^2*b3^5*b4^3*b5^5+2*b2^2*b3^5*b4*b5^7-2*b2^2*b3^4*b4^6*b5^3-2*b2^2*b3^4*b4^2*b5^7-2*b2^2*b3^3*b4^5*b5^5+2*b2^2*b3^2*b4^6*b5^5-2*b2^2*b3^2*b4^4*b5^7+2*b2^2*b3*b4^5*b5^7+2*b3^6*b4^4*b5^5-4*b3^5*b4^5*b5^5+2*b3^5*b4^3*b5^7+2*b3^4*b4^6*b5^5-4*b3^4*b4^4*b5^7+2*b3^3*b4^5*b5^7)

my2 = (-b2^4*b3^5*b4^3*b5^3+b2^4*b3^5*b4*b5^5+2*b2^4*b3^4*b4^4*b5^3-b2^4*b3^4*b4^2*b5^5+b2^4*b3^4*b5^7-b2^4*b3^3*b4^5*b5^3-b2^4*b3^3*b4*b5^7-b2^4*b3^2*b4^4*b5^5+b2^4*b3*b4^5*b5^5-b2^4*b3*b4^3*b5^7+b2^4*b4^4*b5^7+b2^2*b3^6*b4^4*b5^3-b2^2*b3^6*b4^2*b5^5-2*b2^2*b3^5*b4^5*b5^3+b2^2*b3^5*b4^3*b5^5-b2^2*b3^5*b4*b5^7+b2^2*b3^4*b4^6*b5^3+b2^2*b3^4*b4^2*b5^7+b2^2*b3^3*b4^5*b5^5-b2^2*b3^2*b4^6*b5^5+b2^2*b3^2*b4^4*b5^7-b2^2*b3*b4^5*b5^7-b3^6*b4^4*b5^5+2*b3^5*b4^5*b5^5-b3^5*b4^3*b5^7-b3^4*b4^6*b5^5+2*b3^4*b4^4*b5^7-b3^3*b4^5*b5^7)

mx = (-b2^4*b3^6*b4^4*b5^6+2*b2^4*b3^5*b4^5*b5^6-b2^4*b3^5*b4^3*b5^8-b2^4*b3^4*b4^6*b5^6+2*b2^4*b3^4*b4^4*b5^8-b2^4*b3^3*b4^5*b5^8+b2^2*b3^7*b4^5*b5^6-2*b2^2*b3^6*b4^6*b5^6+b2^2*b3^6*b4^4*b5^8+b2^2*b3^5*b4^7*b5^6-2*b2^2*b3^5*b4^5*b5^8+b2^2*b3^4*b4^6*b5^8)

my = (b2^4*b3^6*b4^4*b5^6-2*b2^4*b3^5*b4^5*b5^6+b2^4*b3^5*b4^3*b5^8+b2^4*b3^4*b4^6*b5^6-2*b2^4*b3^4*b4^4*b5^8+b2^4*b3^3*b4^5*b5^8-b2^2*b3^7*b4^5*b5^6+2*b2^2*b3^6*b4^6*b5^6-b2^2*b3^6*b4^4*b5^8-b2^2*b3^5*b4^7*b5^6+2*b2^2*b3^5*b4^5*b5^8-b2^2*b3^4*b4^6*b5^8)