q, c, p, d, b, 
b-2
b^2*d^2*p^2-2*b^2*d^2*p-2*b*d^2*p^2+b^2*d^2+2*b^2*p^2+2*b*c*p*q+4*b*d^2*p-2*b*d^2*q+c^2*q^2+2*c*d*p*q-2*c*d*q^2+d^2*p^2-2*d^2*p*q+d^2*q^2-4*b^2*p-2*b*c*d+2*b*p*q-2*c^2*q-2*c*d*p+2*c*d*q+2*b^2+4*b*p-2*b*q+c^2+2*p^2-2*p*q-4*b+2*q+2
b^2*d*p^2-2*b^2*d*p-b*c*p*q+b*d*p^2+b^2*c+b^2*d+b*c*q+b*d*p-c*p*q-2*d*p^2+2*d*p*q-b*c-2*b*d+c*p-2*c*q-d*p+d*q+2*c
-b^2*p^2+2*b^2*p-b^2+2*p^2-2*p*q-2*q+2
3*b^2*d^2*p^2-6*b^2*d^2*p+6*b*c*d*p*q+3*b^2*d^2+b^2*p^2+6*b*c*d*p+6*b*c*d*q+3*c^2*q^2-3*d^2*p^2+6*d^2*p*q-3*d^2*q^2-2*b^2*p-6*b*c*d-6*c^2*q+b^2+3*c^2-4*q^2+4*p
