[ x^4 - x^3 + 109*x^2 + 153*x + 2474, \ x^4 + 115*x^2 + 324, \ x^4 - x^3 - 97*x^2 - 218*x - 113, \ x^4 - 2*x^3 + 199*x^2 - 198*x - 2128 ]