N:=22;
X:=y^4 + (x^3 + 2*x^2 + x + 2)*y^3 + (x^5 + x^4 + 2*x^3 + 2*x^2 + 1)*y^2 + (x^5 - x^4 - 2*x^3 - x^2 - x)*y - x^4 - x^3;
r:=(x^2*y + x^2 + x*y + y)/(x^3 + 2*x^2 + y);
s:=(x*y + y)/(x^2 + y);
E:=[s-r*s+1,r*s-r^2*s,r*s-r^2*s,0,0];
P:=[0,0];