[ x^4 - x^3 - 3*x^2 + 12*x + 61, \ x^4 + 45*x^2 + 361, \ x^4 - x^3 - 10*x^2 + 140*x + 427, \ x^4 - 2*x^3 - 40*x^2 + 41*x - 887 ]