[ x^4 - x^3 + x^2 - x + 1, \ x^4 - x^2 - 3*x + 2, \ x^4 - x^3 + 2*x^2 + 11*x + 71, \ x^4 + 61*x^2 + 1089, \ x^4 - x^3 - 159*x^2 + 159*x + 4961 ]