SS[1] := [
(-x*y-z+1)*(-u*v*w-u*v-w+1),
-6+12*x+Dx*(1-48*x+48*x^2)+Dx^2*(x-24*x^2+16*x^3),
30
]:

SS[2] := [
(-x*y*z-x*y-z+1)*(-u*v*w-u*v-w+1),
9-35*x-7*x^2+x^3+Dx*(-1+70*x-70*x^2-66*x^3+3*x^4)+Dx^2*(-x+34*x^2-34*x^4+x^5),
41
]: