[ x^4 - x^3 + 59*x^2 - 21*x + 441, \ x^4 + 109*x^2 + 441, \ x^4 - x^3 - 16*x^2 - 17*x + 222, \ x^4 - x^3 - 142*x^2 + 4468*x - 29776, \ x^4 - 2*x^3 + 102*x^2 - 101*x + 21 ]