[ x^4 - x^3 - 15*x^2 - 18*x - 4, \ x^4 - x^3 - 36*x^2 - 91*x - 61, \ x^4 - 69*x^2 + 196, \ x^4 - x^3 - 999*x^2 - 1986*x + 94460, \ x^4 - x^3 - 1006*x^2 - 3971*x + 35829, \ x^4 - x^3 - 1491*x^2 - 29579*x - 161954, \ x^4 - x^3 - 1491*x^2 - 13671*x + 13034 ]