[ x^4 - x^3 + 6*x - 11, \ x^4 + 9*x^2 - 31*x - 87, \ x^4 - x^3 - 13*x^2 + 20*x - 28, \ x^4 + 77*x^2 + 225, \ x^4 - x^3 - 13*x^2 + 127*x + 507, \ x^4 - 2*x^3 - 52*x^2 + 53*x - 555, \ x^4 - x^3 - 227*x^2 - 515*x - 26457 ]