[ x^4 - x^3 + 11*x^2 + 12*x + 5, \ x^4 + 73*x^2 + 1089, \ x^4 - x^3 - 17*x^2 + 26*x + 120, \ x^4 - 2*x^3 - 68*x^2 + 69*x + 1503, \ x^4 - 139*x^2 - 1251 ]