x^4 - x^3 + x^2 - x + 1 x^4 - x^3 + 7*x - 11 x^4 - x^3 + 6*x^2 + 14*x - 49 x^4 - 2*x^3 + 2*x^2 - x + 38 x^4 + 73*x^2 + 1521 x^4 - 2*x^3 + 14*x^2 - 13*x + 231 x^4 - 2*x^3 + 14*x^2 + 7*x + 106 x^4 - x^3 - 189*x^2 + 189*x + 7031 x^4 - 151*x - 302