Q[a,b,c,d,e,f,g,h,i,j,k,l,m,n,o]
{o*m*d-n*l*e,n*f*a-o*g*e,n*c*a-o*d*b,m*k*c-l*j*d,m*c*a-l*e*b,k*i*b-j*h*c,-j*d*a+k*e*b,-i*g*a+h*f*b,-i*d*a+h*e*c,f*d*b-g*e*c,-n*l*j*a+o*m*k*b,-n*l*i*a+o*m*h*c,n*l*f*b-o*m*g*c,-n*k*i*a+o*j*h*d,-n*k*f*b+o*j*g*d,n*k*e*c-o*j*d^2,-n*i*a^2+o*h*e*b,-n*h*f*c+o*i*g*d,m*k*i*a-l*j*h*e,-m*k*f*b+l*j*g*e,m*h*f*c-l*i*g*e,-l*i*d*b+m*h*c^2,-m*f*d*a+l*g*e^2,-j*h*f*d+k*i*g*e,j*g*c*a-k*f*b^2,-n*l*j*h*f+o*m*k*i*g,-n*k^2*i*e*b+o*j^2*h*d^2,l*i^2*g*d*a-m*h^2*f*c^2}