x^4 - x^3 - 13*x^2 + 20*x - 28 x^4 - x^3 + 29*x^2 - 108*x + 215 x^4 + 63*x^2 + 484 x^4 - 2*x^3 + 55*x^2 - 54*x + 1157 x^4 - x^3 - 78*x^2 + 830*x - 1731 x^4 + 107*x^2 - 1712