[ x^4 - x^3 - 6*x^2 + 6*x + 13, \ x^4 + 53*x^2 + 225, \ x^4 - x^3 - 10*x^2 - 26*x + 261, \ x^4 - x^3 - 37*x^2 - 220*x + 675, \ x^4 - x^3 - 10*x^2 - 1188*x - 7043, \ x^4 - x^3 - 93*x^2 - 192*x - 1316, \ x^4 - 2*x^3 - 40*x^2 + 41*x - 57 ]