[ x^4 - x^3 - 27*x^2 + 41*x + 2, \ x^4 - x^3 + 38*x^2 - 299*x + 508, \ x^4 + 5*x^2 + 1521, \ x^4 - x^3 + 1506*x^2 - 3025*x + 510491, \ x^4 - x^3 - 259*x^2 + 887*x - 901 ]