x^4 + 37*x^2 + 9 x^4 - x^3 - 22*x^2 - x + 71 x^4 - x^3 - 5*x^2 + 51*x + 107 x^4 - x^3 + 43*x^2 - 188*x - 647 x^4 - 2*x^3 - 20*x^2 + 21*x - 223