[ x^4 - 11*x + 11, \ x^4 - x^3 - 15*x^2 - 18*x - 4, \ x^4 - 15*x^2 + 169, \ x^4 - 41*x - 123, \ x^4 - x^3 + 108*x^2 + 228*x + 1472, \ x^4 - x^3 - 56*x^2 - 141*x + 37 ]