x^4 - x^3 + x^2 + 14*x + 12 x^4 - x^3 - 5*x^2 + 18*x - 4 x^4 - x^3 - 15*x^2 - 18*x - 4 x^4 - 9*x^2 + 256 x^4 - 2*x^3 - 19*x^2 + 20*x - 64 x^4 - x^3 + 231*x^2 + 474*x + 5900 x^4 - 41*x^2 + 656