[ x^4 - x^3 - 20*x^2 - 21*x + 441, \ x^4 - x^3 - 12*x^2 + 28*x - 19, \ x^4 - x^3 + 27*x^2 - 47*x - 49, \ x^4 - x^3 + 6*x^2 - 34*x - 89, \ x^4 - x^3 - 10*x^2 + 57*x + 261, \ x^4 - 2*x^3 - 40*x^2 + 41*x - 140, \ x^4 - x^3 - 93*x^2 + 306*x - 237 ]