[ x^4 - x^3 - 8*x^2 - 13*x + 32, \ x^4 - x^3 - 51*x^2 + 214*x - 236, \ x^4 - 57*x^2 + 1600, \ x^4 - x^3 + 771*x^2 - 4718*x + 26068 ]